/** @license
 *
 * SoundManager 2: JavaScript Sound for the Web
 * ----------------------------------------------
 * http://schillmania.com/projects/soundmanager2/
 *
 * Copyright (c) 2007, Scott Schiller. All rights reserved.
 * Code provided under the BSD License:
 * http://schillmania.com/projects/soundmanager2/license.txt
 *
 * V2.97a.20150601
 */

/*global window, SM2_DEFER, sm2Debugger, console, document, navigator, setTimeout, setInterval, clearInterval, Audio, opera, module, define */
/*jslint regexp: true, sloppy: true, white: true, nomen: true, plusplus: true, todo: true */

/**
 * About this file
 * -------------------------------------------------------------------------------------
 * This is the fully-commented source version of the SoundManager 2 API,
 * recommended for use during development and testing.
 *
 * See soundmanager2-nodebug-jsmin.js for an optimized build (~11KB with gzip.)
 * http://schillmania.com/projects/soundmanager2/doc/getstarted/#basic-inclusion
 * Alternately, serve this file with gzip for 75% compression savings (~30KB over HTTP.)
 *
 * You may notice <d> and </d> comments in this source; these are delimiters for
 * debug blocks which are removed in the -nodebug builds, further optimizing code size.
 *
 * Also, as you may note: Whoa, reliable cross-platform/device audio support is hard! ;)
 */

(function(window, _undefined) {

"use strict";

if (!window || !window.document) {

  // Don't cross the [environment] streams. SM2 expects to be running in a browser, not under node.js etc.
  // Additionally, if a browser somehow manages to fail this test, as Egon said: "It would be bad."

  throw new Error('SoundManager requires a browser with window and document objects.');

}

var soundManager = null;

/**
 * The SoundManager constructor.
 *
 * @constructor
 * @param {string} smURL Optional: Path to SWF files
 * @param {string} smID Optional: The ID to use for the SWF container element
 * @this {SoundManager}
 * @return {SoundManager} The new SoundManager instance
 */

function SoundManager(smURL, smID) {

  /**
   * soundManager configuration options list
   * defines top-level configuration properties to be applied to the soundManager instance (eg. soundManager.flashVersion)
   * to set these properties, use the setup() method - eg., soundManager.setup({url: '/swf/', flashVersion: 9})
   */

  this.setupOptions = {

    'url': (smURL || null),             // path (directory) where SoundManager 2 SWFs exist, eg., /path/to/swfs/
    'flashVersion': 8,                  // flash build to use (8 or 9.) Some API features require 9.
    'debugMode': true,                  // enable debugging output (console.log() with HTML fallback)
    'debugFlash': false,                // enable debugging output inside SWF, troubleshoot Flash/browser issues
    'useConsole': true,                 // use console.log() if available (otherwise, writes to #soundmanager-debug element)
    'consoleOnly': true,                // if console is being used, do not create/write to #soundmanager-debug
    'waitForWindowLoad': false,         // force SM2 to wait for window.onload() before trying to call soundManager.onload()
    'bgColor': '#ffffff',               // SWF background color. N/A when wmode = 'transparent'
    'useHighPerformance': false,        // position:fixed flash movie can help increase js/flash speed, minimize lag
    'flashPollingInterval': null,       // msec affecting whileplaying/loading callback frequency. If null, default of 50 msec is used.
    'html5PollingInterval': null,       // msec affecting whileplaying() for HTML5 audio, excluding mobile devices. If null, native HTML5 update events are used.
    'flashLoadTimeout': 1000,           // msec to wait for flash movie to load before failing (0 = infinity)
    'wmode': null,                      // flash rendering mode - null, 'transparent', or 'opaque' (last two allow z-index to work)
    'allowScriptAccess': 'always',      // for scripting the SWF (object/embed property), 'always' or 'sameDomain'
    'useFlashBlock': false,             // *requires flashblock.css, see demos* - allow recovery from flash blockers. Wait indefinitely and apply timeout CSS to SWF, if applicable.
    'useHTML5Audio': true,              // use HTML5 Audio() where API is supported (most Safari, Chrome versions), Firefox (MP3/MP4 support varies.) Ideally, transparent vs. Flash API where possible.
    'forceUseGlobalHTML5Audio': false,  // if true, a single Audio() object is used for all sounds - and only one can play at a time.
    'ignoreMobileRestrictions': false,  // if true, SM2 will not apply global HTML5 audio rules to mobile UAs. iOS WebViews purportedly allow multiple Audio() objects, auto-play etc.
    'html5Test': /^(probably|maybe)$/i, // HTML5 Audio() format support test. Use /^probably$/i; if you want to be more conservative.
    'preferFlash': false,               // overrides useHTML5audio, will use Flash for MP3/MP4/AAC if present. Potential option if HTML5 playback with these formats is quirky.
    'noSWFCache': false,                // if true, appends ?ts={date} to break aggressive SWF caching.
    'idPrefix': 'sound'                 // if an id is not provided to createSound(), this prefix is used for generated IDs - 'sound0', 'sound1' etc.

  };

  this.defaultOptions = {

    /**
     * the default configuration for sound objects made with createSound() and related methods
     * eg., volume, auto-load behaviour and so forth
     */

    'autoLoad': false,        // enable automatic loading (otherwise .load() will be called on demand with .play(), the latter being nicer on bandwidth - if you want to .load yourself, you also can)
    'autoPlay': false,        // enable playing of file as soon as possible (much faster if "stream" is true)
    'from': null,             // position to start playback within a sound (msec), default = beginning
    'loops': 1,               // how many times to repeat the sound (position will wrap around to 0, setPosition() will break out of loop when >0)
    'onid3': null,            // callback function for "ID3 data is added/available"
    'onload': null,           // callback function for "load finished"
    'whileloading': null,     // callback function for "download progress update" (X of Y bytes received)
    'onplay': null,           // callback for "play" start
    'onpause': null,          // callback for "pause"
    'onresume': null,         // callback for "resume" (pause toggle)
    'whileplaying': null,     // callback during play (position update)
    'onposition': null,       // object containing times and function callbacks for positions of interest
    'onstop': null,           // callback for "user stop"
    'onfailure': null,        // callback function for when playing fails
    'onfinish': null,         // callback function for "sound finished playing"
    'multiShot': true,        // let sounds "restart" or layer on top of each other when played multiple times, rather than one-shot/one at a time
    'multiShotEvents': false, // fire multiple sound events (currently onfinish() only) when multiShot is enabled
    'position': null,         // offset (milliseconds) to seek to within loaded sound data.
    'pan': 0,                 // "pan" settings, left-to-right, -100 to 100
    'stream': true,           // allows playing before entire file has loaded (recommended)
    'to': null,               // position to end playback within a sound (msec), default = end
    'type': null,             // MIME-like hint for file pattern / canPlay() tests, eg. audio/mp3
    'usePolicyFile': false,   // enable crossdomain.xml request for audio on remote domains (for ID3/waveform access)
    'volume': 100             // self-explanatory. 0-100, the latter being the max.

  };

  this.flash9Options = {

    /**
     * flash 9-only options,
     * merged into defaultOptions if flash 9 is being used
     */

    'isMovieStar': null,      // "MovieStar" MPEG4 audio mode. Null (default) = auto detect MP4, AAC etc. based on URL. true = force on, ignore URL
    'usePeakData': false,     // enable left/right channel peak (level) data
    'useWaveformData': false, // enable sound spectrum (raw waveform data) - NOTE: May increase CPU load.
    'useEQData': false,       // enable sound EQ (frequency spectrum data) - NOTE: May increase CPU load.
    'onbufferchange': null,   // callback for "isBuffering" property change
    'ondataerror': null       // callback for waveform/eq data access error (flash playing audio in other tabs/domains)

  };

  this.movieStarOptions = {

    /**
     * flash 9.0r115+ MPEG4 audio options,
     * merged into defaultOptions if flash 9+movieStar mode is enabled
     */

    'bufferTime': 3,          // seconds of data to buffer before playback begins (null = flash default of 0.1 seconds - if AAC playback is gappy, try increasing.)
    'serverURL': null,        // rtmp: FMS or FMIS server to connect to, required when requesting media via RTMP or one of its variants
    'onconnect': null,        // rtmp: callback for connection to flash media server
    'duration': null          // rtmp: song duration (msec)

  };

  this.audioFormats = {

    /**
     * determines HTML5 support + flash requirements.
     * if no support (via flash and/or HTML5) for a "required" format, SM2 will fail to start.
     * flash fallback is used for MP3 or MP4 if HTML5 can't play it (or if preferFlash = true)
     */

    'mp3': {
      'type': ['audio/mpeg; codecs="mp3"', 'audio/mpeg', 'audio/mp3', 'audio/MPA', 'audio/mpa-robust'],
      'required': true
    },

    'mp4': {
      'related': ['aac','m4a','m4b'], // additional formats under the MP4 container
      'type': ['audio/mp4; codecs="mp4a.40.2"', 'audio/aac', 'audio/x-m4a', 'audio/MP4A-LATM', 'audio/mpeg4-generic'],
      'required': false
    },

    'ogg': {
      'type': ['audio/ogg; codecs=vorbis'],
      'required': false
    },

    'opus': {
      'type': ['audio/ogg; codecs=opus', 'audio/opus'],
      'required': false
    },

    'wav': {
      'type': ['audio/wav; codecs="1"', 'audio/wav', 'audio/wave', 'audio/x-wav'],
      'required': false
    }

  };

  // HTML attributes (id + class names) for the SWF container

  this.movieID = 'sm2-container';
  this.id = (smID || 'sm2movie');

  this.debugID = 'soundmanager-debug';
  this.debugURLParam = /([#?&])debug=1/i;

  // dynamic attributes

  this.versionNumber = 'V2.97a.20150601';
  this.version = null;
  this.movieURL = null;
  this.altURL = null;
  this.swfLoaded = false;
  this.enabled = false;
  this.oMC = null;
  this.sounds = {};
  this.soundIDs = [];
  this.muted = false;
  this.didFlashBlock = false;
  this.filePattern = null;

  this.filePatterns = {
    'flash8': /\.mp3(\?.*)?$/i,
    'flash9': /\.mp3(\?.*)?$/i
  };

  // support indicators, set at init

  this.features = {
    'buffering': false,
    'peakData': false,
    'waveformData': false,
    'eqData': false,
    'movieStar': false
  };

  // flash sandbox info, used primarily in troubleshooting

  this.sandbox = {
    // <d>
    'type': null,
    'types': {
      'remote': 'remote (domain-based) rules',
      'localWithFile': 'local with file access (no internet access)',
      'localWithNetwork': 'local with network (internet access only, no local access)',
      'localTrusted': 'local, trusted (local+internet access)'
    },
    'description': null,
    'noRemote': null,
    'noLocal': null
    // </d>
  };

  /**
   * format support (html5/flash)
   * stores canPlayType() results based on audioFormats.
   * eg. { mp3: boolean, mp4: boolean }
   * treat as read-only.
   */

  this.html5 = {
    'usingFlash': null // set if/when flash fallback is needed
  };

  // file type support hash
  this.flash = {};

  // determined at init time
  this.html5Only = false;

  // used for special cases (eg. iPad/iPhone/palm OS?)
  this.ignoreFlash = false;

  /**
   * a few private internals (OK, a lot. :D)
   */

  var SMSound,
  sm2 = this, globalHTML5Audio = null, flash = null, sm = 'soundManager', smc = sm + ': ', h5 = 'HTML5::', id, ua = navigator.userAgent, wl = window.location.href.toString(), doc = document, doNothing, setProperties, init, fV, on_queue = [], debugOpen = true, debugTS, didAppend = false, appendSuccess = false, didInit = false, disabled = false, windowLoaded = false, _wDS, wdCount = 0, initComplete, mixin, assign, extraOptions, addOnEvent, processOnEvents, initUserOnload, delayWaitForEI, waitForEI, rebootIntoHTML5, setVersionInfo, handleFocus, strings, initMovie, domContentLoaded, winOnLoad, didDCLoaded, getDocument, createMovie, catchError, setPolling, initDebug, debugLevels = ['log', 'info', 'warn', 'error'], defaultFlashVersion = 8, disableObject, failSafely, normalizeMovieURL, oRemoved = null, oRemovedHTML = null, str, flashBlockHandler, getSWFCSS, swfCSS, toggleDebug, loopFix, policyFix, complain, idCheck, waitingForEI = false, initPending = false, startTimer, stopTimer, timerExecute, h5TimerCount = 0, h5IntervalTimer = null, parseURL, messages = [],
  canIgnoreFlash, needsFlash = null, featureCheck, html5OK, html5CanPlay, html5Ext, html5Unload, domContentLoadedIE, testHTML5, event, slice = Array.prototype.slice, useGlobalHTML5Audio = false, lastGlobalHTML5URL, hasFlash, detectFlash, badSafariFix, html5_events, showSupport, flushMessages, wrapCallback, idCounter = 0, didSetup, msecScale = 1000,
  is_iDevice = ua.match(/(ipad|iphone|ipod)/i), isAndroid = ua.match(/android/i), isIE = ua.match(/msie/i),
  isWebkit = ua.match(/webkit/i),
  isSafari = (ua.match(/safari/i) && !ua.match(/chrome/i)),
  isOpera = (ua.match(/opera/i)),
  mobileHTML5 = (ua.match(/(mobile|pre\/|xoom)/i) || is_iDevice || isAndroid),
  isBadSafari = (!wl.match(/usehtml5audio/i) && !wl.match(/sm2\-ignorebadua/i) && isSafari && !ua.match(/silk/i) && ua.match(/OS X 10_6_([3-7])/i)), // Safari 4 and 5 (excluding Kindle Fire, "Silk") occasionally fail to load/play HTML5 audio on Snow Leopard 10.6.3 through 10.6.7 due to bug(s) in QuickTime X and/or other underlying frameworks. :/ Confirmed bug. https://bugs.webkit.org/show_bug.cgi?id=32159
  hasConsole = (window.console !== _undefined && console.log !== _undefined),
  isFocused = (doc.hasFocus !== _undefined ? doc.hasFocus() : null),
  tryInitOnFocus = (isSafari && (doc.hasFocus === _undefined || !doc.hasFocus())),
  okToDisable = !tryInitOnFocus,
  flashMIME = /(mp3|mp4|mpa|m4a|m4b)/i,
  emptyURL = 'about:blank', // safe URL to unload, or load nothing from (flash 8 + most HTML5 UAs)
  emptyWAV = 'data:audio/wave;base64,/UklGRiYAAABXQVZFZm10IBAAAAABAAEARKwAAIhYAQACABAAZGF0YQIAAAD//w==', // tiny WAV for HTML5 unloading
  overHTTP = (doc.location ? doc.location.protocol.match(/http/i) : null),
  http = (!overHTTP ? 'http:/'+'/' : ''),
  // mp3, mp4, aac etc.
  netStreamMimeTypes = /^\s*audio\/(?:x-)?(?:mpeg4|aac|flv|mov|mp4||m4v|m4a|m4b|mp4v|3gp|3g2)\s*(?:$|;)/i,
  // Flash v9.0r115+ "moviestar" formats
  netStreamTypes = ['mpeg4', 'aac', 'flv', 'mov', 'mp4', 'm4v', 'f4v', 'm4a', 'm4b', 'mp4v', '3gp', '3g2'],
  netStreamPattern = new RegExp('\\.(' + netStreamTypes.join('|') + ')(\\?.*)?$', 'i');

  this.mimePattern = /^\s*audio\/(?:x-)?(?:mp(?:eg|3))\s*(?:$|;)/i; // default mp3 set

  // use altURL if not "online"
  this.useAltURL = !overHTTP;

  swfCSS = {
    'swfBox': 'sm2-object-box',
    'swfDefault': 'movieContainer',
    'swfError': 'swf_error', // SWF loaded, but SM2 couldn't start (other error)
    'swfTimedout': 'swf_timedout',
    'swfLoaded': 'swf_loaded',
    'swfUnblocked': 'swf_unblocked', // or loaded OK
    'sm2Debug': 'sm2_debug',
    'highPerf': 'high_performance',
    'flashDebug': 'flash_debug'
  };

  /**
   * basic HTML5 Audio() support test
   * try...catch because of IE 9 "not implemented" nonsense
   * https://github.com/Modernizr/Modernizr/issues/224
   */

  this.hasHTML5 = (function() {
    try {
      // new Audio(null) for stupid Opera 9.64 case, which throws not_enough_arguments exception otherwise.
      return (Audio !== _undefined && (isOpera && opera !== _undefined && opera.version() < 10 ? new Audio(null) : new Audio()).canPlayType !== _undefined);
    } catch(e) {
      return false;
    }
  }());

  /**
   * Public SoundManager API
   * -----------------------
   */

  /**
   * Configures top-level soundManager properties.
   *
   * @param {object} options Option parameters, eg. { flashVersion: 9, url: '/path/to/swfs/' }
   * onready and ontimeout are also accepted parameters. call soundManager.setup() to see the full list.
   */

  this.setup = function(options) {

    var noURL = (!sm2.url);

    // warn if flash options have already been applied

    if (options !== _undefined && didInit && needsFlash && sm2.ok() && (options.flashVersion !== _undefined || options.url !== _undefined || options.html5Test !== _undefined)) {
      complain(str('setupLate'));
    }

    // TODO: defer: true?

    assign(options);

    // force the singleton HTML5 pattern?
    if (sm2.setupOptions.useHTML5Audio && !useGlobalHTML5Audio && sm2.setupOptions.forceUseGlobalHTML5Audio) {
      messages.push(strings.globalHTML5);
      useGlobalHTML5Audio = true;
    }

    // don't apply 
    if (!didSetup && mobileHTML5) {

      if (sm2.setupOptions.ignoreMobileRestrictions) {
        messages.push(strings.ignoreMobile);
      }

      // prefer HTML5 for mobile + tablet-like devices, probably more reliable vs. flash at this point.

      // <d>
      if (!sm2.setupOptions.useHTML5Audio || sm2.setupOptions.preferFlash) {
        // notify that defaults are being changed.
        sm2._wD(strings.mobileUA);
      }
      // </d>

      sm2.setupOptions.useHTML5Audio = true;
      sm2.setupOptions.preferFlash = false;

      if ((isAndroid && !ua.match(/android\s2\.3/i))) {
        
        // iOS and Android devices tend to work better with a single audio instance, specifically for chained playback of sounds in sequence.
        // common use case: exiting sound onfinish() -> createSound() -> play()

        // <d>
        sm2._wD(strings.globalHTML5);
        // </d>

        if (is_iDevice) {
          sm2.ignoreFlash = true;
        }

        useGlobalHTML5Audio = true;

      }

    }

    // special case 1: "Late setup". SM2 loaded normally, but user didn't assign flash URL eg., setup({url:...}) before SM2 init. Treat as delayed init.

    if (options) {

      if (noURL && didDCLoaded && options.url !== _undefined) {
        sm2.beginDelayedInit();
      }

      // special case 2: If lazy-loading SM2 (DOMContentLoaded has already happened) and user calls setup() with url: parameter, try to init ASAP.

      if (!didDCLoaded && options.url !== _undefined && doc.readyState === 'complete') {
        setTimeout(domContentLoaded, 1);
      }

    }

    didSetup = true;

    return sm2;

  };

  this.ok = function() {

    return (needsFlash ? (didInit && !disabled) : (sm2.useHTML5Audio && sm2.hasHTML5));

  };

  this.supported = this.ok; // legacy

  this.getMovie = function(smID) {

    // safety net: some old browsers differ on SWF references, possibly related to ExternalInterface / flash version
    return id(smID) || doc[smID] || window[smID];

  };

  /**
   * Creates a SMSound sound object instance. Can also be overloaded, e.g., createSound('mySound', '/some.mp3');
   *
   * @param {object} oOptions Sound options (at minimum, url parameter is required.)
   * @return {object} SMSound The new SMSound object.
   */

  this.createSound = function(oOptions, _url) {

    var cs, cs_string, options, oSound = null;

    // <d>
    cs = sm + '.createSound(): ';
    cs_string = cs + str(!didInit ? 'notReady' : 'notOK');
    // </d>

    if (!didInit || !sm2.ok()) {
      complain(cs_string);
      return false;
    }

    if (_url !== _undefined) {
      // function overloading in JS! :) ... assume simple createSound(id, url) use case.
      oOptions = {
        'id': oOptions,
        'url': _url
      };
    }

    // inherit from defaultOptions
    options = mixin(oOptions);

    options.url = parseURL(options.url);

    // generate an id, if needed.
    if (options.id === _undefined) {
      options.id = sm2.setupOptions.idPrefix + (idCounter++);
    }

    // <d>
    if (options.id.toString().charAt(0).match(/^[0-9]$/)) {
      sm2._wD(cs + str('badID', options.id), 2);
    }

    sm2._wD(cs + options.id + (options.url ? ' (' + options.url + ')' : ''), 1);
    // </d>

    if (idCheck(options.id, true)) {
      sm2._wD(cs + options.id + ' exists', 1);
      return sm2.sounds[options.id];
    }

    function make() {

      options = loopFix(options);
      sm2.sounds[options.id] = new SMSound(options);
      sm2.soundIDs.push(options.id);
      return sm2.sounds[options.id];

    }

    if (html5OK(options)) {

      oSound = make();
      // <d>
      if (!sm2.html5Only) {
        sm2._wD(options.id + ': Using HTML5');
      }
      // </d>
      oSound._setup_html5(options);

    } else {

      if (sm2.html5Only) {
        sm2._wD(options.id + ': No HTML5 support for this sound, and no Flash. Exiting.');
        return make();
      }

      // TODO: Move HTML5/flash checks into generic URL parsing/handling function.

      if (sm2.html5.usingFlash && options.url && options.url.match(/data\:/i)) {
        // data: URIs not supported by Flash, either.
        sm2._wD(options.id + ': data: URIs not supported via Flash. Exiting.');
        return make();
      }

      if (fV > 8) {
        if (options.isMovieStar === null) {
          // attempt to detect MPEG-4 formats
          options.isMovieStar = !!(options.serverURL || (options.type ? options.type.match(netStreamMimeTypes) : false) || (options.url && options.url.match(netStreamPattern)));
        }
        // <d>
        if (options.isMovieStar) {
          sm2._wD(cs + 'using MovieStar handling');
          if (options.loops > 1) {
            _wDS('noNSLoop');
          }
        }
        // </d>
      }

      options = policyFix(options, cs);
      oSound = make();

      if (fV === 8) {
        flash._createSound(options.id, options.loops || 1, options.usePolicyFile);
      } else {
        flash._createSound(options.id, options.url, options.usePeakData, options.useWaveformData, options.useEQData, options.isMovieStar, (options.isMovieStar ? options.bufferTime : false), options.loops || 1, options.serverURL, options.duration || null, options.autoPlay, true, options.autoLoad, options.usePolicyFile);
        if (!options.serverURL) {
          // We are connected immediately
          oSound.connected = true;
          if (options.onconnect) {
            options.onconnect.apply(oSound);
          }
        }
      }

      if (!options.serverURL && (options.autoLoad || options.autoPlay)) {
        // call load for non-rtmp streams
        oSound.load(options);
      }

    }

    // rtmp will play in onconnect
    if (!options.serverURL && options.autoPlay) {
      oSound.play();
    }

    return oSound;

  };

  /**
   * Destroys a SMSound sound object instance.
   *
   * @param {string} sID The ID of the sound to destroy
   */

  this.destroySound = function(sID, _bFromSound) {

    // explicitly destroy a sound before normal page unload, etc.

    if (!idCheck(sID)) {
      return false;
    }

    var oS = sm2.sounds[sID], i;

    oS.stop();
    
    // Disable all callbacks after stop(), when the sound is being destroyed
    oS._iO = {};
    
    oS.unload();

    for (i = 0; i < sm2.soundIDs.length; i++) {
      if (sm2.soundIDs[i] === sID) {
        sm2.soundIDs.splice(i, 1);
        break;
      }
    }

    if (!_bFromSound) {
      // ignore if being called from SMSound instance
      oS.destruct(true);
    }

    oS = null;
    delete sm2.sounds[sID];

    return true;

  };

  /**
   * Calls the load() method of a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   * @param {object} oOptions Optional: Sound options
   */

  this.load = function(sID, oOptions) {

    if (!idCheck(sID)) {
      return false;
    }
    return sm2.sounds[sID].load(oOptions);

  };

  /**
   * Calls the unload() method of a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   */

  this.unload = function(sID) {

    if (!idCheck(sID)) {
      return false;
    }
    return sm2.sounds[sID].unload();

  };

  /**
   * Calls the onPosition() method of a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   * @param {number} nPosition The position to watch for
   * @param {function} oMethod The relevant callback to fire
   * @param {object} oScope Optional: The scope to apply the callback to
   * @return {SMSound} The SMSound object
   */

  this.onPosition = function(sID, nPosition, oMethod, oScope) {

    if (!idCheck(sID)) {
      return false;
    }
    return sm2.sounds[sID].onposition(nPosition, oMethod, oScope);

  };

  // legacy/backwards-compability: lower-case method name
  this.onposition = this.onPosition;

  /**
   * Calls the clearOnPosition() method of a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   * @param {number} nPosition The position to watch for
   * @param {function} oMethod Optional: The relevant callback to fire
   * @return {SMSound} The SMSound object
   */

  this.clearOnPosition = function(sID, nPosition, oMethod) {

    if (!idCheck(sID)) {
      return false;
    }
    return sm2.sounds[sID].clearOnPosition(nPosition, oMethod);

  };

  /**
   * Calls the play() method of a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   * @param {object} oOptions Optional: Sound options
   * @return {SMSound} The SMSound object
   */

  this.play = function(sID, oOptions) {

    var result = null,
        // legacy function-overloading use case: play('mySound', '/path/to/some.mp3');
        overloaded = (oOptions && !(oOptions instanceof Object));

    if (!didInit || !sm2.ok()) {
      complain(sm + '.play(): ' + str(!didInit?'notReady':'notOK'));
      return false;
    }

    if (!idCheck(sID, overloaded)) {

      if (!overloaded) {
        // no sound found for the given ID. Bail.
        return false;
      }

      if (overloaded) {
        oOptions = {
          url: oOptions
        };
      }

      if (oOptions && oOptions.url) {
        // overloading use case, create+play: .play('someID', {url:'/path/to.mp3'});
        sm2._wD(sm + '.play(): Attempting to create "' + sID + '"', 1);
        oOptions.id = sID;
        result = sm2.createSound(oOptions).play();
      }

    } else if (overloaded) {

      // existing sound object case
      oOptions = {
        url: oOptions
      };

    }

    if (result === null) {
      // default case
      result = sm2.sounds[sID].play(oOptions);
    }

    return result;

  };

  // just for convenience
  this.start = this.play;

  /**
   * Calls the setPosition() method of a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   * @param {number} nMsecOffset Position (milliseconds)
   * @return {SMSound} The SMSound object
   */

  this.setPosition = function(sID, nMsecOffset) {

    if (!idCheck(sID)) {
      return false;
    }
    return sm2.sounds[sID].setPosition(nMsecOffset);

  };

  /**
   * Calls the stop() method of a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   * @return {SMSound} The SMSound object
   */

  this.stop = function(sID) {

    if (!idCheck(sID)) {
      return false;
    }

    sm2._wD(sm + '.stop(' + sID + ')', 1);
    return sm2.sounds[sID].stop();

  };

  /**
   * Stops all currently-playing sounds.
   */

  this.stopAll = function() {

    var oSound;
    sm2._wD(sm + '.stopAll()', 1);

    for (oSound in sm2.sounds) {
      if (sm2.sounds.hasOwnProperty(oSound)) {
        // apply only to sound objects
        sm2.sounds[oSound].stop();
      }
    }

  };

  /**
   * Calls the pause() method of a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   * @return {SMSound} The SMSound object
   */

  this.pause = function(sID) {

    if (!idCheck(sID)) {
      return false;
    }
    return sm2.sounds[sID].pause();

  };

  /**
   * Pauses all currently-playing sounds.
   */

  this.pauseAll = function() {

    var i;
    for (i = sm2.soundIDs.length - 1; i >= 0; i--) {
      sm2.sounds[sm2.soundIDs[i]].pause();
    }

  };

  /**
   * Calls the resume() method of a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   * @return {SMSound} The SMSound object
   */

  this.resume = function(sID) {

    if (!idCheck(sID)) {
      return false;
    }
    return sm2.sounds[sID].resume();

  };

  /**
   * Resumes all currently-paused sounds.
   */

  this.resumeAll = function() {

    var i;
    for (i = sm2.soundIDs.length- 1 ; i >= 0; i--) {
      sm2.sounds[sm2.soundIDs[i]].resume();
    }

  };

  /**
   * Calls the togglePause() method of a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   * @return {SMSound} The SMSound object
   */

  this.togglePause = function(sID) {

    if (!idCheck(sID)) {
      return false;
    }
    return sm2.sounds[sID].togglePause();

  };

  /**
   * Calls the setPan() method of a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   * @param {number} nPan The pan value (-100 to 100)
   * @return {SMSound} The SMSound object
   */

  this.setPan = function(sID, nPan) {

    if (!idCheck(sID)) {
      return false;
    }
    return sm2.sounds[sID].setPan(nPan);

  };

  /**
   * Calls the setVolume() method of a SMSound object by ID
   * Overloaded case: pass only volume argument eg., setVolume(50) to apply to all sounds.
   *
   * @param {string} sID The ID of the sound
   * @param {number} nVol The volume value (0 to 100)
   * @return {SMSound} The SMSound object
   */

  this.setVolume = function(sID, nVol) {

    // setVolume(50) function overloading case - apply to all sounds

    var i, j;

    if (sID !== _undefined && !isNaN(sID) && nVol === _undefined) {
      for (i = 0, j = sm2.soundIDs.length; i < j; i++) {
        sm2.sounds[sm2.soundIDs[i]].setVolume(sID);
      }
      return;
    }

    // setVolume('mySound', 50) case

    if (!idCheck(sID)) {
      return false;
    }

    return sm2.sounds[sID].setVolume(nVol);

  };

  /**
   * Calls the mute() method of either a single SMSound object by ID, or all sound objects.
   *
   * @param {string} sID Optional: The ID of the sound (if omitted, all sounds will be used.)
   */

  this.mute = function(sID) {

    var i = 0;

    if (sID instanceof String) {
      sID = null;
    }

    if (!sID) {

      sm2._wD(sm + '.mute(): Muting all sounds');
      for (i = sm2.soundIDs.length - 1; i >= 0; i--) {
        sm2.sounds[sm2.soundIDs[i]].mute();
      }
      sm2.muted = true;

    } else {

      if (!idCheck(sID)) {
        return false;
      }
      sm2._wD(sm + '.mute(): Muting "' + sID + '"');
      return sm2.sounds[sID].mute();

    }

    return true;

  };

  /**
   * Mutes all sounds.
   */

  this.muteAll = function() {

    sm2.mute();

  };

  /**
   * Calls the unmute() method of either a single SMSound object by ID, or all sound objects.
   *
   * @param {string} sID Optional: The ID of the sound (if omitted, all sounds will be used.)
   */

  this.unmute = function(sID) {

    var i;

    if (sID instanceof String) {
      sID = null;
    }

    if (!sID) {

      sm2._wD(sm + '.unmute(): Unmuting all sounds');
      for (i = sm2.soundIDs.length - 1; i >= 0; i--) {
        sm2.sounds[sm2.soundIDs[i]].unmute();
      }
      sm2.muted = false;

    } else {

      if (!idCheck(sID)) {
        return false;
      }
      sm2._wD(sm + '.unmute(): Unmuting "' + sID + '"');
      return sm2.sounds[sID].unmute();

    }

    return true;

  };

  /**
   * Unmutes all sounds.
   */

  this.unmuteAll = function() {

    sm2.unmute();

  };

  /**
   * Calls the toggleMute() method of a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   * @return {SMSound} The SMSound object
   */

  this.toggleMute = function(sID) {

    if (!idCheck(sID)) {
      return false;
    }
    return sm2.sounds[sID].toggleMute();

  };

  /**
   * Retrieves the memory used by the flash plugin.
   *
   * @return {number} The amount of memory in use
   */

  this.getMemoryUse = function() {

    // flash-only
    var ram = 0;

    if (flash && fV !== 8) {
      ram = parseInt(flash._getMemoryUse(), 10);
    }

    return ram;

  };

  /**
   * Undocumented: NOPs soundManager and all SMSound objects.
   */

  this.disable = function(bNoDisable) {

    // destroy all functions
    var i;

    if (bNoDisable === _undefined) {
      bNoDisable = false;
    }

    if (disabled) {
      return false;
    }

    disabled = true;
    _wDS('shutdown', 1);

    for (i = sm2.soundIDs.length - 1; i >= 0; i--) {
      disableObject(sm2.sounds[sm2.soundIDs[i]]);
    }

    // fire "complete", despite fail
    initComplete(bNoDisable);
    event.remove(window, 'load', initUserOnload);

    return true;

  };

  /**
   * Determines playability of a MIME type, eg. 'audio/mp3'.
   */

  this.canPlayMIME = function(sMIME) {

    var result;

    if (sm2.hasHTML5) {
      result = html5CanPlay({
        type: sMIME
      });
    }

    if (!result && needsFlash) {
      // if flash 9, test netStream (movieStar) types as well.
      result = (sMIME && sm2.ok() ? !!((fV > 8 ? sMIME.match(netStreamMimeTypes) : null) || sMIME.match(sm2.mimePattern)) : null); // TODO: make less "weird" (per JSLint)
    }

    return result;

  };

  /**
   * Determines playability of a URL based on audio support.
   *
   * @param {string} sURL The URL to test
   * @return {boolean} URL playability
   */

  this.canPlayURL = function(sURL) {

    var result;

    if (sm2.hasHTML5) {
      result = html5CanPlay({
        url: sURL
      });
    }

    if (!result && needsFlash) {
      result = (sURL && sm2.ok() ? !!(sURL.match(sm2.filePattern)) : null);
    }

    return result;

  };

  /**
   * Determines playability of an HTML DOM &lt;a&gt; object (or similar object literal) based on audio support.
   *
   * @param {object} oLink an HTML DOM &lt;a&gt; object or object literal including href and/or type attributes
   * @return {boolean} URL playability
   */

  this.canPlayLink = function(oLink) {

    if (oLink.type !== _undefined && oLink.type) {
      if (sm2.canPlayMIME(oLink.type)) {
        return true;
      }
    }

    return sm2.canPlayURL(oLink.href);

  };

  /**
   * Retrieves a SMSound object by ID.
   *
   * @param {string} sID The ID of the sound
   * @return {SMSound} The SMSound object
   */

  this.getSoundById = function(sID, _suppressDebug) {

    if (!sID) {
      return null;
    }

    var result = sm2.sounds[sID];

    // <d>
    if (!result && !_suppressDebug) {
      sm2._wD(sm + '.getSoundById(): Sound "' + sID + '" not found.', 2);
    }
    // </d>

    return result;

  };

  /**
   * Queues a callback for execution when SoundManager has successfully initialized.
   *
   * @param {function} oMethod The callback method to fire
   * @param {object} oScope Optional: The scope to apply to the callback
   */

  this.onready = function(oMethod, oScope) {

    var sType = 'onready',
        result = false;

    if (typeof oMethod === 'function') {

      // <d>
      if (didInit) {
        sm2._wD(str('queue', sType));
      }
      // </d>

      if (!oScope) {
        oScope = window;
      }

      addOnEvent(sType, oMethod, oScope);
      processOnEvents();

      result = true;

    } else {

      throw str('needFunction', sType);

    }

    return result;

  };

  /**
   * Queues a callback for execution when SoundManager has failed to initialize.
   *
   * @param {function} oMethod The callback method to fire
   * @param {object} oScope Optional: The scope to apply to the callback
   */

  this.ontimeout = function(oMethod, oScope) {

    var sType = 'ontimeout',
        result = false;

    if (typeof oMethod === 'function') {

      // <d>
      if (didInit) {
        sm2._wD(str('queue', sType));
      }
      // </d>

      if (!oScope) {
        oScope = window;
      }

      addOnEvent(sType, oMethod, oScope);
      processOnEvents({type:sType});

      result = true;

    } else {

      throw str('needFunction', sType);

    }

    return result;

  };

  /**
   * Writes console.log()-style debug output to a console or in-browser element.
   * Applies when debugMode = true
   *
   * @param {string} sText The console message
   * @param {object} nType Optional log level (number), or object. Number case: Log type/style where 0 = 'info', 1 = 'warn', 2 = 'error'. Object case: Object to be dumped.
   */

  this._writeDebug = function(sText, sTypeOrObject) {

    // pseudo-private console.log()-style output
    // <d>

    var sDID = 'soundmanager-debug', o, oItem;

    if (!sm2.setupOptions.debugMode) {
      return false;
    }

    if (hasConsole && sm2.useConsole) {
      if (sTypeOrObject && typeof sTypeOrObject === 'object') {
        // object passed; dump to console.
        console.log(sText, sTypeOrObject);
      } else if (debugLevels[sTypeOrObject] !== _undefined) {
        console[debugLevels[sTypeOrObject]](sText);
      } else {
        console.log(sText);
      }
      if (sm2.consoleOnly) {
        return true;
      }
    }

    o = id(sDID);

    if (!o) {
      return false;
    }

    oItem = doc.createElement('div');

    if (++wdCount % 2 === 0) {
      oItem.className = 'sm2-alt';
    }

    if (sTypeOrObject === _undefined) {
      sTypeOrObject = 0;
    } else {
      sTypeOrObject = parseInt(sTypeOrObject, 10);
    }

    oItem.appendChild(doc.createTextNode(sText));

    if (sTypeOrObject) {
      if (sTypeOrObject >= 2) {
        oItem.style.fontWeight = 'bold';
      }
      if (sTypeOrObject === 3) {
        oItem.style.color = '#ff3333';
      }
    }

    // top-to-bottom
    // o.appendChild(oItem);

    // bottom-to-top
    o.insertBefore(oItem, o.firstChild);

    o = null;
    // </d>

    return true;

  };

  // <d>
  // last-resort debugging option
  if (wl.indexOf('sm2-debug=alert') !== -1) {
    this._writeDebug = function(sText) {
      window.alert(sText);
    };
  }
  // </d>

  // alias
  this._wD = this._writeDebug;

  /**
   * Provides debug / state information on all SMSound objects.
   */

  this._debug = function() {

    // <d>
    var i, j;
    _wDS('currentObj', 1);

    for (i = 0, j = sm2.soundIDs.length; i < j; i++) {
      sm2.sounds[sm2.soundIDs[i]]._debug();
    }
    // </d>

  };

  /**
   * Restarts and re-initializes the SoundManager instance.
   *
   * @param {boolean} resetEvents Optional: When true, removes all registered onready and ontimeout event callbacks.
   * @param {boolean} excludeInit Options: When true, does not call beginDelayedInit() (which would restart SM2).
   * @return {object} soundManager The soundManager instance.
   */

  this.reboot = function(resetEvents, excludeInit) {

    // reset some (or all) state, and re-init unless otherwise specified.

    // <d>
    if (sm2.soundIDs.length) {
      sm2._wD('Destroying ' + sm2.soundIDs.length + ' SMSound object' + (sm2.soundIDs.length !== 1 ? 's' : '') + '...');
    }
    // </d>

    var i, j, k;

    for (i = sm2.soundIDs.length- 1 ; i >= 0; i--) {
      sm2.sounds[sm2.soundIDs[i]].destruct();
    }

    // trash ze flash (remove from the DOM)

    if (flash) {

      try {

        if (isIE) {
          oRemovedHTML = flash.innerHTML;
        }

        oRemoved = flash.parentNode.removeChild(flash);

      } catch(e) {

        // Remove failed? May be due to flash blockers silently removing the SWF object/embed node from the DOM. Warn and continue.

        _wDS('badRemove', 2);

      }

    }

    // actually, force recreate of movie.

    oRemovedHTML = oRemoved = needsFlash = flash = null;

    sm2.enabled = didDCLoaded = didInit = waitingForEI = initPending = didAppend = appendSuccess = disabled = useGlobalHTML5Audio = sm2.swfLoaded = false;

    sm2.soundIDs = [];
    sm2.sounds = {};

    idCounter = 0;
    didSetup = false;

    if (!resetEvents) {
      // reset callbacks for onready, ontimeout etc. so that they will fire again on re-init
      for (i in on_queue) {
        if (on_queue.hasOwnProperty(i)) {
          for (j = 0, k = on_queue[i].length; j < k; j++) {
            on_queue[i][j].fired = false;
          }
        }
      }
    } else {
      // remove all callbacks entirely
      on_queue = [];
    }

    // <d>
    if (!excludeInit) {
      sm2._wD(sm + ': Rebooting...');
    }
    // </d>

    // reset HTML5 and flash canPlay test results

    sm2.html5 = {
      'usingFlash': null
    };

    sm2.flash = {};

    // reset device-specific HTML/flash mode switches

    sm2.html5Only = false;
    sm2.ignoreFlash = false;

    window.setTimeout(function() {

      // by default, re-init

      if (!excludeInit) {
        sm2.beginDelayedInit();
      }

    }, 20);

    return sm2;

  };

  this.reset = function() {

    /**
     * Shuts down and restores the SoundManager instance to its original loaded state, without an explicit reboot. All onready/ontimeout handlers are removed.
     * After this call, SM2 may be re-initialized via soundManager.beginDelayedInit().
     * @return {object} soundManager The soundManager instance.
     */

    _wDS('reset');
    return sm2.reboot(true, true);

  };

  /**
   * Undocumented: Determines the SM2 flash movie's load progress.
   *
   * @return {number or null} Percent loaded, or if invalid/unsupported, null.
   */

  this.getMoviePercent = function() {

    /**
     * Interesting syntax notes...
     * Flash/ExternalInterface (ActiveX/NPAPI) bridge methods are not typeof "function" nor instanceof Function, but are still valid.
     * Additionally, JSLint dislikes ('PercentLoaded' in flash)-style syntax and recommends hasOwnProperty(), which does not work in this case.
     * Furthermore, using (flash && flash.PercentLoaded) causes IE to throw "object doesn't support this property or method".
     * Thus, 'in' syntax must be used.
     */

    return (flash && 'PercentLoaded' in flash ? flash.PercentLoaded() : null); // Yes, JSLint. See nearby comment in source for explanation.

  };

  /**
   * Additional helper for manually invoking SM2's init process after DOM Ready / window.onload().
   */

  this.beginDelayedInit = function() {

    windowLoaded = true;
    domContentLoaded();

    setTimeout(function() {

      if (initPending) {
        return false;
      }

      createMovie();
      initMovie();
      initPending = true;

      return true;

    }, 20);

    delayWaitForEI();

  };

  /**
   * Destroys the SoundManager instance and all SMSound instances.
   */

  this.destruct = function() {

    sm2._wD(sm + '.destruct()');
    sm2.disable(true);

  };

  /**
   * SMSound() (sound object) constructor
   * ------------------------------------
   *
   * @param {object} oOptions Sound options (id and url are required attributes)
   * @return {SMSound} The new SMSound object
   */

  SMSound = function(oOptions) {

    var s = this, resetProperties, add_html5_events, remove_html5_events, stop_html5_timer, start_html5_timer, attachOnPosition, onplay_called = false, onPositionItems = [], onPositionFired = 0, detachOnPosition, applyFromTo, lastURL = null, lastHTML5State, urlOmitted;

    lastHTML5State = {
      // tracks duration + position (time)
      duration: null,
      time: null
    };

    this.id = oOptions.id;

    // legacy
    this.sID = this.id;

    this.url = oOptions.url;
    this.options = mixin(oOptions);

    // per-play-instance-specific options
    this.instanceOptions = this.options;

    // short alias
    this._iO = this.instanceOptions;

    // assign property defaults
    this.pan = this.options.pan;
    this.volume = this.options.volume;

    // whether or not this object is using HTML5
    this.isHTML5 = false;

    // internal HTML5 Audio() object reference
    this._a = null;

    // for flash 8 special-case createSound() without url, followed by load/play with url case
    urlOmitted = (this.url ? false : true);

    /**
     * SMSound() public methods
     * ------------------------
     */

    this.id3 = {};

    /**
     * Writes SMSound object parameters to debug console
     */

    this._debug = function() {

      // <d>
      sm2._wD(s.id + ': Merged options:', s.options);
      // </d>

    };

    /**
     * Begins loading a sound per its *url*.
     *
     * @param {object} oOptions Optional: Sound options
     * @return {SMSound} The SMSound object
     */

    this.load = function(oOptions) {

      var oSound = null, instanceOptions;

      if (oOptions !== _undefined) {
        s._iO = mixin(oOptions, s.options);
      } else {
        oOptions = s.options;
        s._iO = oOptions;
        if (lastURL && lastURL !== s.url) {
          _wDS('manURL');
          s._iO.url = s.url;
          s.url = null;
        }
      }

      if (!s._iO.url) {
        s._iO.url = s.url;
      }

      s._iO.url = parseURL(s._iO.url);

      // ensure we're in sync
      s.instanceOptions = s._iO;

      // local shortcut
      instanceOptions = s._iO;

      sm2._wD(s.id + ': load (' + instanceOptions.url + ')');

      if (!instanceOptions.url && !s.url) {
        sm2._wD(s.id + ': load(): url is unassigned. Exiting.', 2);
        return s;
      }

      // <d>
      if (!s.isHTML5 && fV === 8 && !s.url && !instanceOptions.autoPlay) {
        // flash 8 load() -> play() won't work before onload has fired.
        sm2._wD(s.id + ': Flash 8 load() limitation: Wait for onload() before calling play().', 1);
      }
      // </d>

      if (instanceOptions.url === s.url && s.readyState !== 0 && s.readyState !== 2) {
        _wDS('onURL', 1);
        // if loaded and an onload() exists, fire immediately.
        if (s.readyState === 3 && instanceOptions.onload) {
          // assume success based on truthy duration.
          wrapCallback(s, function() {
            instanceOptions.onload.apply(s, [(!!s.duration)]);
          });
        }
        return s;
      }

      // reset a few state properties

      s.loaded = false;
      s.readyState = 1;
      s.playState = 0;
      s.id3 = {};

      // TODO: If switching from HTML5 -> flash (or vice versa), stop currently-playing audio.

      if (html5OK(instanceOptions)) {

        oSound = s._setup_html5(instanceOptions);

        if (!oSound._called_load) {

          s._html5_canplay = false;

          // TODO: review called_load / html5_canplay logic

          // if url provided directly to load(), assign it here.

          if (s.url !== instanceOptions.url) {

            sm2._wD(_wDS('manURL') + ': ' + instanceOptions.url);

            s._a.src = instanceOptions.url;

            // TODO: review / re-apply all relevant options (volume, loop, onposition etc.)

            // reset position for new URL
            s.setPosition(0);

          }

          // given explicit load call, try to preload.

          // early HTML5 implementation (non-standard)
          s._a.autobuffer = 'auto';

          // standard property, values: none / metadata / auto
          // reference: http://msdn.microsoft.com/en-us/library/ie/ff974759%28v=vs.85%29.aspx
          s._a.preload = 'auto';

          s._a._called_load = true;

        } else {

          sm2._wD(s.id + ': Ignoring request to load again');

        }

      } else {

        if (sm2.html5Only) {
          sm2._wD(s.id + ': No flash support. Exiting.');
          return s;
        }

        if (s._iO.url && s._iO.url.match(/data\:/i)) {
          // data: URIs not supported by Flash, either.
          sm2._wD(s.id + ': data: URIs not supported via Flash. Exiting.');
          return s;
        }

        try {
          s.isHTML5 = false;
          s._iO = policyFix(loopFix(instanceOptions));
          // if we have "position", disable auto-play as we'll be seeking to that position at onload().
          if (s._iO.autoPlay && (s._iO.position || s._iO.from)) {
            sm2._wD(s.id + ': Disabling autoPlay because of non-zero offset case');
            s._iO.autoPlay = false;
          }
          // re-assign local shortcut
          instanceOptions = s._iO;
          if (fV === 8) {
            flash._load(s.id, instanceOptions.url, instanceOptions.stream, instanceOptions.autoPlay, instanceOptions.usePolicyFile);
          } else {
            flash._load(s.id, instanceOptions.url, !!(instanceOptions.stream), !!(instanceOptions.autoPlay), instanceOptions.loops || 1, !!(instanceOptions.autoLoad), instanceOptions.usePolicyFile);
          }
        } catch(e) {
          _wDS('smError', 2);
          debugTS('onload', false);
          catchError({
            type: 'SMSOUND_LOAD_JS_EXCEPTION',
            fatal: true
          });
        }

      }

      // after all of this, ensure sound url is up to date.
      s.url = instanceOptions.url;

      return s;

    };

    /**
     * Unloads a sound, canceling any open HTTP requests.
     *
     * @return {SMSound} The SMSound object
     */

    this.unload = function() {

      // Flash 8/AS2 can't "close" a stream - fake it by loading an empty URL
      // Flash 9/AS3: Close stream, preventing further load
      // HTML5: Most UAs will use empty URL

      if (s.readyState !== 0) {

        sm2._wD(s.id + ': unload()');

        if (!s.isHTML5) {

          if (fV === 8) {
            flash._unload(s.id, emptyURL);
          } else {
            flash._unload(s.id);
          }

        } else {

          stop_html5_timer();

          if (s._a) {

            s._a.pause();

            // update empty URL, too
            lastURL = html5Unload(s._a);

          }

        }

        // reset load/status flags
        resetProperties();

      }

      return s;

    };

    /**
     * Unloads and destroys a sound.
     */

    this.destruct = function(_bFromSM) {

      sm2._wD(s.id + ': Destruct');

      if (!s.isHTML5) {

        // kill sound within Flash
        // Disable the onfailure handler
        s._iO.onfailure = null;
        flash._destroySound(s.id);

      } else {

        stop_html5_timer();

        if (s._a) {
          s._a.pause();
          html5Unload(s._a);
          if (!useGlobalHTML5Audio) {
            remove_html5_events();
          }
          // break obvious circular reference
          s._a._s = null;
          s._a = null;
        }

      }

      if (!_bFromSM) {
        // ensure deletion from controller
        sm2.destroySound(s.id, true);
      }

    };

    /**
     * Begins playing a sound.
     *
     * @param {object} oOptions Optional: Sound options
     * @return {SMSound} The SMSound object
     */

    this.play = function(oOptions, _updatePlayState) {

      var fN, allowMulti, a, onready,
          audioClone, onended, oncanplay,
          startOK = true,
          exit = null;

      // <d>
      fN = s.id + ': play(): ';
      // </d>

      // default to true
      _updatePlayState = (_updatePlayState === _undefined ? true : _updatePlayState);

      if (!oOptions) {
        oOptions = {};
      }

      // first, use local URL (if specified)
      if (s.url) {
        s._iO.url = s.url;
      }

      // mix in any options defined at createSound()
      s._iO = mixin(s._iO, s.options);

      // mix in any options specific to this method
      s._iO = mixin(oOptions, s._iO);

      s._iO.url = parseURL(s._iO.url);

      s.instanceOptions = s._iO;

      // RTMP-only
      if (!s.isHTML5 && s._iO.serverURL && !s.connected) {
        if (!s.getAutoPlay()) {
          sm2._wD(fN +' Netstream not connected yet - setting autoPlay');
          s.setAutoPlay(true);
        }
        // play will be called in onconnect()
        return s;
      }

      if (html5OK(s._iO)) {
        s._setup_html5(s._iO);
        start_html5_timer();
      }

      if (s.playState === 1 && !s.paused) {

        allowMulti = s._iO.multiShot;

        if (!allowMulti) {

          sm2._wD(fN + 'Already playing (one-shot)', 1);

          if (s.isHTML5) {
            // go back to original position.
            s.setPosition(s._iO.position);
          }

          exit = s;

        } else {
          sm2._wD(fN + 'Already playing (multi-shot)', 1);
        }

      }

      if (exit !== null) {
        return exit;
      }

      // edge case: play() with explicit URL parameter
      if (oOptions.url && oOptions.url !== s.url) {

        // special case for createSound() followed by load() / play() with url; avoid double-load case.
        if (!s.readyState && !s.isHTML5 && fV === 8 && urlOmitted) {

          urlOmitted = false;

        } else {

          // load using merged options
          s.load(s._iO);

        }

      }

      if (!s.loaded) {

        if (s.readyState === 0) {

          sm2._wD(fN + 'Attempting to load');

          // try to get this sound playing ASAP
          if (!s.isHTML5 && !sm2.html5Only) {

            // flash: assign directly because setAutoPlay() increments the instanceCount
            s._iO.autoPlay = true;
            s.load(s._iO);

          } else if (s.isHTML5) {

            // iOS needs this when recycling sounds, loading a new URL on an existing object.
            s.load(s._iO);

          } else {

            sm2._wD(fN + 'Unsupported type. Exiting.');
            exit = s;

          }

          // HTML5 hack - re-set instanceOptions?
          s.instanceOptions = s._iO;

        } else if (s.readyState === 2) {

          sm2._wD(fN + 'Could not load - exiting', 2);
          exit = s;

        } else {

          sm2._wD(fN + 'Loading - attempting to play...');

        }

      } else {

        // "play()"
        sm2._wD(fN.substr(0, fN.lastIndexOf(':')));

      }

      if (exit !== null) {
        return exit;
      }

      if (!s.isHTML5 && fV === 9 && s.position > 0 && s.position === s.duration) {
        // flash 9 needs a position reset if play() is called while at the end of a sound.
        sm2._wD(fN + 'Sound at end, resetting to position: 0');
        oOptions.position = 0;
      }

      /**
       * Streams will pause when their buffer is full if they are being loaded.
       * In this case paused is true, but the song hasn't started playing yet.
       * If we just call resume() the onplay() callback will never be called.
       * So only call resume() if the position is > 0.
       * Another reason is because options like volume won't have been applied yet.
       * For normal sounds, just resume.
       */

      if (s.paused && s.position >= 0 && (!s._iO.serverURL || s.position > 0)) {

        // https://gist.github.com/37b17df75cc4d7a90bf6
        sm2._wD(fN + 'Resuming from paused state', 1);
        s.resume();

      } else {

        s._iO = mixin(oOptions, s._iO);

        /**
         * Preload in the event of play() with position under Flash,
         * or from/to parameters and non-RTMP case
         */
        if (((!s.isHTML5 && s._iO.position !== null && s._iO.position > 0) || (s._iO.from !== null && s._iO.from > 0) || s._iO.to !== null) && s.instanceCount === 0 && s.playState === 0 && !s._iO.serverURL) {

          onready = function() {
            // sound "canplay" or onload()
            // re-apply position/from/to to instance options, and start playback
            s._iO = mixin(oOptions, s._iO);
            s.play(s._iO);
          };

          // HTML5 needs to at least have "canplay" fired before seeking.
          if (s.isHTML5 && !s._html5_canplay) {

            // this hasn't been loaded yet. load it first, and then do this again.
            sm2._wD(fN + 'Beginning load for non-zero offset case');

            s.load({
              // note: custom HTML5-only event added for from/to implementation.
              _oncanplay: onready
            });

            exit = false;

          } else if (!s.isHTML5 && !s.loaded && (!s.readyState || s.readyState !== 2)) {

            // to be safe, preload the whole thing in Flash.

            sm2._wD(fN + 'Preloading for non-zero offset case');

            s.load({
              onload: onready
            });

            exit = false;

          }

          if (exit !== null) {
            return exit;
          }

          // otherwise, we're ready to go. re-apply local options, and continue

          s._iO = applyFromTo();

        }

        // sm2._wD(fN + 'Starting to play');

        // increment instance counter, where enabled + supported
        if (!s.instanceCount || s._iO.multiShotEvents || (s.isHTML5 && s._iO.multiShot && !useGlobalHTML5Audio) || (!s.isHTML5 && fV > 8 && !s.getAutoPlay())) {
          s.instanceCount++;
        }

        // if first play and onposition parameters exist, apply them now
        if (s._iO.onposition && s.playState === 0) {
          attachOnPosition(s);
        }

        s.playState = 1;
        s.paused = false;

        s.position = (s._iO.position !== _undefined && !isNaN(s._iO.position) ? s._iO.position : 0);

        if (!s.isHTML5) {
          s._iO = policyFix(loopFix(s._iO));
        }

        if (s._iO.onplay && _updatePlayState) {
          s._iO.onplay.apply(s);
          onplay_called = true;
        }

        s.setVolume(s._iO.volume, true);
        s.setPan(s._iO.pan, true);

        if (!s.isHTML5) {

          startOK = flash._start(s.id, s._iO.loops || 1, (fV === 9 ? s.position : s.position / msecScale), s._iO.multiShot || false);

          if (fV === 9 && !startOK) {
            // edge case: no sound hardware, or 32-channel flash ceiling hit.
            // applies only to Flash 9, non-NetStream/MovieStar sounds.
            // http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/media/Sound.html#play%28%29
            sm2._wD(fN + 'No sound hardware, or 32-sound ceiling hit', 2);
            if (s._iO.onplayerror) {
              s._iO.onplayerror.apply(s);
            }

          }

        } else {

          if (s.instanceCount < 2) {

            // HTML5 single-instance case

            start_html5_timer();

            a = s._setup_html5();

            s.setPosition(s._iO.position);

            a.play();

          } else {

            // HTML5 multi-shot case

            sm2._wD(s.id + ': Cloning Audio() for instance #' + s.instanceCount + '...');

            audioClone = new Audio(s._iO.url);

            onended = function() {
              event.remove(audioClone, 'ended', onended);
              s._onfinish(s);
              // cleanup
              html5Unload(audioClone);
              audioClone = null;
            };

            oncanplay = function() {
              event.remove(audioClone, 'canplay', oncanplay);
              try {
                audioClone.currentTime = s._iO.position/msecScale;
              } catch(err) {
                complain(s.id + ': multiShot play() failed to apply position of ' + (s._iO.position/msecScale));
              }
              audioClone.play();
            };

            event.add(audioClone, 'ended', onended);

            // apply volume to clones, too
            if (s._iO.volume !== _undefined) {
              audioClone.volume = Math.max(0, Math.min(1, s._iO.volume/100));
            }

            // playing multiple muted sounds? if you do this, you're weird ;) - but let's cover it.
            if (s.muted) {
              audioClone.muted = true;
            }

            if (s._iO.position) {
              // HTML5 audio can't seek before onplay() event has fired.
              // wait for canplay, then seek to position and start playback.
              event.add(audioClone, 'canplay', oncanplay);
            } else {
              // begin playback at currentTime: 0
              audioClone.play();
            }

          }

        }

      }

      return s;

    };

    // just for convenience
    this.start = this.play;

    /**
     * Stops playing a sound (and optionally, all sounds)
     *
     * @param {boolean} bAll Optional: Whether to stop all sounds
     * @return {SMSound} The SMSound object
     */

    this.stop = function(bAll) {

      var instanceOptions = s._iO,
          originalPosition;

      if (s.playState === 1) {

        sm2._wD(s.id + ': stop()');

        s._onbufferchange(0);
        s._resetOnPosition(0);
        s.paused = false;

        if (!s.isHTML5) {
          s.playState = 0;
        }

        // remove onPosition listeners, if any
        detachOnPosition();

        // and "to" position, if set
        if (instanceOptions.to) {
          s.clearOnPosition(instanceOptions.to);
        }

        if (!s.isHTML5) {

          flash._stop(s.id, bAll);

          // hack for netStream: just unload
          if (instanceOptions.serverURL) {
            s.unload();
          }

        } else {

          if (s._a) {

            originalPosition = s.position;

            // act like Flash, though
            s.setPosition(0);

            // hack: reflect old position for onstop() (also like Flash)
            s.position = originalPosition;

            // html5 has no stop()
            // NOTE: pausing means iOS requires interaction to resume.
            s._a.pause();

            s.playState = 0;

            // and update UI
            s._onTimer();

            stop_html5_timer();

          }

        }

        s.instanceCount = 0;
        s._iO = {};

        if (instanceOptions.onstop) {
          instanceOptions.onstop.apply(s);
        }

      }

      return s;

    };

    /**
     * Undocumented/internal: Sets autoPlay for RTMP.
     *
     * @param {boolean} autoPlay state
     */

    this.setAutoPlay = function(autoPlay) {

      sm2._wD(s.id + ': Autoplay turned ' + (autoPlay ? 'on' : 'off'));
      s._iO.autoPlay = autoPlay;

      if (!s.isHTML5) {
        flash._setAutoPlay(s.id, autoPlay);
        if (autoPlay) {
          // only increment the instanceCount if the sound isn't loaded (TODO: verify RTMP)
          if (!s.instanceCount && s.readyState === 1) {
            s.instanceCount++;
            sm2._wD(s.id + ': Incremented instance count to '+s.instanceCount);
          }
        }
      }

    };

    /**
     * Undocumented/internal: Returns the autoPlay boolean.
     *
     * @return {boolean} The current autoPlay value
     */

    this.getAutoPlay = function() {

      return s._iO.autoPlay;

    };

    /**
     * Sets the position of a sound.
     *
     * @param {number} nMsecOffset Position (milliseconds)
     * @return {SMSound} The SMSound object
     */

    this.setPosition = function(nMsecOffset) {

      if (nMsecOffset === _undefined) {
        nMsecOffset = 0;
      }

      var position, position1K,
          // Use the duration from the instance options, if we don't have a track duration yet.
          // position >= 0 and <= current available (loaded) duration
          offset = (s.isHTML5 ? Math.max(nMsecOffset, 0) : Math.min(s.duration || s._iO.duration, Math.max(nMsecOffset, 0)));

      s.position = offset;
      position1K = s.position/msecScale;
      s._resetOnPosition(s.position);
      s._iO.position = offset;

      if (!s.isHTML5) {

        position = (fV === 9 ? s.position : position1K);

        if (s.readyState && s.readyState !== 2) {
          // if paused or not playing, will not resume (by playing)
          flash._setPosition(s.id, position, (s.paused || !s.playState), s._iO.multiShot);
        }

      } else if (s._a) {

        // Set the position in the canplay handler if the sound is not ready yet
        if (s._html5_canplay) {

          if (s._a.currentTime !== position1K) {

            /**
             * DOM/JS errors/exceptions to watch out for:
             * if seek is beyond (loaded?) position, "DOM exception 11"
             * "INDEX_SIZE_ERR": DOM exception 1
             */
            sm2._wD(s.id + ': setPosition(' + position1K + ')');

            try {
              s._a.currentTime = position1K;
              if (s.playState === 0 || s.paused) {
                // allow seek without auto-play/resume
                s._a.pause();
              }
            } catch(e) {
              sm2._wD(s.id + ': setPosition(' + position1K + ') failed: ' + e.message, 2);
            }

          }

        } else if (position1K) {

          // warn on non-zero seek attempts
          sm2._wD(s.id + ': setPosition(' + position1K + '): Cannot seek yet, sound not ready', 2);
          return s;

        }

        if (s.paused) {

          // if paused, refresh UI right away by forcing update
          s._onTimer(true);

        }

      }

      return s;

    };

    /**
     * Pauses sound playback.
     *
     * @return {SMSound} The SMSound object
     */

    this.pause = function(_bCallFlash) {

      if (s.paused || (s.playState === 0 && s.readyState !== 1)) {
        return s;
      }

      sm2._wD(s.id + ': pause()');
      s.paused = true;

      if (!s.isHTML5) {
        if (_bCallFlash || _bCallFlash === _undefined) {
          flash._pause(s.id, s._iO.multiShot);
        }
      } else {
        s._setup_html5().pause();
        stop_html5_timer();
      }

      if (s._iO.onpause) {
        s._iO.onpause.apply(s);
      }

      return s;

    };

    /**
     * Resumes sound playback.
     *
     * @return {SMSound} The SMSound object
     */

    /**
     * When auto-loaded streams pause on buffer full they have a playState of 0.
     * We need to make sure that the playState is set to 1 when these streams "resume".
     * When a paused stream is resumed, we need to trigger the onplay() callback if it
     * hasn't been called already. In this case since the sound is being played for the
     * first time, I think it's more appropriate to call onplay() rather than onresume().
     */

    this.resume = function() {

      var instanceOptions = s._iO;

      if (!s.paused) {
        return s;
      }

      sm2._wD(s.id + ': resume()');
      s.paused = false;
      s.playState = 1;

      if (!s.isHTML5) {

        if (instanceOptions.isMovieStar && !instanceOptions.serverURL) {
          // Bizarre Webkit bug (Chrome reported via 8tracks.com dudes): AAC content paused for 30+ seconds(?) will not resume without a reposition.
          s.setPosition(s.position);
        }

        // flash method is toggle-based (pause/resume)
        flash._pause(s.id, instanceOptions.multiShot);

      } else {

        s._setup_html5().play();
        start_html5_timer();

      }

      if (!onplay_called && instanceOptions.onplay) {

        instanceOptions.onplay.apply(s);
        onplay_called = true;

      } else if (instanceOptions.onresume) {

        instanceOptions.onresume.apply(s);

      }

      return s;

    };

    /**
     * Toggles sound playback.
     *
     * @return {SMSound} The SMSound object
     */

    this.togglePause = function() {

      sm2._wD(s.id + ': togglePause()');

      if (s.playState === 0) {
        s.play({
          position: (fV === 9 && !s.isHTML5 ? s.position : s.position / msecScale)
        });
        return s;
      }

      if (s.paused) {
        s.resume();
      } else {
        s.pause();
      }

      return s;

    };

    /**
     * Sets the panning (L-R) effect.
     *
     * @param {number} nPan The pan value (-100 to 100)
     * @return {SMSound} The SMSound object
     */

    this.setPan = function(nPan, bInstanceOnly) {

      if (nPan === _undefined) {
        nPan = 0;
      }

      if (bInstanceOnly === _undefined) {
        bInstanceOnly = false;
      }

      if (!s.isHTML5) {
        flash._setPan(s.id, nPan);
      } // else { no HTML5 pan? }

      s._iO.pan = nPan;

      if (!bInstanceOnly) {
        s.pan = nPan;
        s.options.pan = nPan;
      }

      return s;

    };

    /**
     * Sets the volume.
     *
     * @param {number} nVol The volume value (0 to 100)
     * @return {SMSound} The SMSound object
     */

    this.setVolume = function(nVol, _bInstanceOnly) {

      /**
       * Note: Setting volume has no effect on iOS "special snowflake" devices.
       * Hardware volume control overrides software, and volume
       * will always return 1 per Apple docs. (iOS 4 + 5.)
       * http://developer.apple.com/library/safari/documentation/AudioVideo/Conceptual/HTML-canvas-guide/AddingSoundtoCanvasAnimations/AddingSoundtoCanvasAnimations.html
       */

      if (nVol === _undefined) {
        nVol = 100;
      }

      if (_bInstanceOnly === _undefined) {
        _bInstanceOnly = false;
      }

      if (!s.isHTML5) {

        flash._setVolume(s.id, (sm2.muted && !s.muted) || s.muted ? 0 : nVol);

      } else if (s._a) {

        if (sm2.muted && !s.muted) {
          s.muted = true;
          s._a.muted = true;
        }

        // valid range for native HTML5 Audio(): 0-1
        s._a.volume = Math.max(0, Math.min(1, nVol/100));

      }

      s._iO.volume = nVol;

      if (!_bInstanceOnly) {
        s.volume = nVol;
        s.options.volume = nVol;
      }

      return s;

    };

    /**
     * Mutes the sound.
     *
     * @return {SMSound} The SMSound object
     */

    this.mute = function() {

      s.muted = true;

      if (!s.isHTML5) {
        flash._setVolume(s.id, 0);
      } else if (s._a) {
        s._a.muted = true;
      }

      return s;

    };

    /**
     * Unmutes the sound.
     *
     * @return {SMSound} The SMSound object
     */

    this.unmute = function() {

      s.muted = false;
      var hasIO = (s._iO.volume !== _undefined);

      if (!s.isHTML5) {
        flash._setVolume(s.id, hasIO ? s._iO.volume : s.options.volume);
      } else if (s._a) {
        s._a.muted = false;
      }

      return s;

    };

    /**
     * Toggles the muted state of a sound.
     *
     * @return {SMSound} The SMSound object
     */

    this.toggleMute = function() {

      return (s.muted ? s.unmute() : s.mute());

    };

    /**
     * Registers a callback to be fired when a sound reaches a given position during playback.
     *
     * @param {number} nPosition The position to watch for
     * @param {function} oMethod The relevant callback to fire
     * @param {object} oScope Optional: The scope to apply the callback to
     * @return {SMSound} The SMSound object
     */

    this.onPosition = function(nPosition, oMethod, oScope) {

      // TODO: basic dupe checking?

      onPositionItems.push({
        position: parseInt(nPosition, 10),
        method: oMethod,
        scope: (oScope !== _undefined ? oScope : s),
        fired: false
      });

      return s;

    };

    // legacy/backwards-compability: lower-case method name
    this.onposition = this.onPosition;

    /**
     * Removes registered callback(s) from a sound, by position and/or callback.
     *
     * @param {number} nPosition The position to clear callback(s) for
     * @param {function} oMethod Optional: Identify one callback to be removed when multiple listeners exist for one position
     * @return {SMSound} The SMSound object
     */

    this.clearOnPosition = function(nPosition, oMethod) {

      var i;

      nPosition = parseInt(nPosition, 10);

      if (isNaN(nPosition)) {
        // safety check
        return false;
      }

      for (i=0; i < onPositionItems.length; i++) {

        if (nPosition === onPositionItems[i].position) {
          // remove this item if no method was specified, or, if the method matches
          
          if (!oMethod || (oMethod === onPositionItems[i].method)) {
            
            if (onPositionItems[i].fired) {
              // decrement "fired" counter, too
              onPositionFired--;
            }
            
            onPositionItems.splice(i, 1);
          
          }
        
        }

      }

    };

    this._processOnPosition = function() {

      var i, item, j = onPositionItems.length;

      if (!j || !s.playState || onPositionFired >= j) {
        return false;
      }

      for (i = j - 1; i >= 0; i--) {
        
        item = onPositionItems[i];
        
        if (!item.fired && s.position >= item.position) {
        
          item.fired = true;
          onPositionFired++;
          item.method.apply(item.scope, [item.position]);
        
          //  reset j -- onPositionItems.length can be changed in the item callback above... occasionally breaking the loop.
		      j = onPositionItems.length;
        
        }
      
      }

      return true;

    };

    this._resetOnPosition = function(nPosition) {

      // reset "fired" for items interested in this position
      var i, item, j = onPositionItems.length;

      if (!j) {
        return false;
      }

      for (i = j - 1; i >= 0; i--) {
        
        item = onPositionItems[i];
        
        if (item.fired && nPosition <= item.position) {
          item.fired = false;
          onPositionFired--;
        }
      
      }

      return true;

    };

    /**
     * SMSound() private internals
     * --------------------------------
     */

    applyFromTo = function() {

      var instanceOptions = s._iO,
          f = instanceOptions.from,
          t = instanceOptions.to,
          start, end;

      end = function() {

        // end has been reached.
        sm2._wD(s.id + ': "To" time of ' + t + ' reached.');

        // detach listener
        s.clearOnPosition(t, end);

        // stop should clear this, too
        s.stop();

      };

      start = function() {

        sm2._wD(s.id + ': Playing "from" ' + f);

        // add listener for end
        if (t !== null && !isNaN(t)) {
          s.onPosition(t, end);
        }

      };

      if (f !== null && !isNaN(f)) {

        // apply to instance options, guaranteeing correct start position.
        instanceOptions.position = f;

        // multiShot timing can't be tracked, so prevent that.
        instanceOptions.multiShot = false;

        start();

      }

      // return updated instanceOptions including starting position
      return instanceOptions;

    };

    attachOnPosition = function() {

      var item,
          op = s._iO.onposition;

      // attach onposition things, if any, now.

      if (op) {

        for (item in op) {
          if (op.hasOwnProperty(item)) {
            s.onPosition(parseInt(item, 10), op[item]);
          }
        }

      }

    };

    detachOnPosition = function() {

      var item,
          op = s._iO.onposition;

      // detach any onposition()-style listeners.

      if (op) {

        for (item in op) {
          if (op.hasOwnProperty(item)) {
            s.clearOnPosition(parseInt(item, 10));
          }
        }

      }

    };

    start_html5_timer = function() {

      if (s.isHTML5) {
        startTimer(s);
      }

    };

    stop_html5_timer = function() {

      if (s.isHTML5) {
        stopTimer(s);
      }

    };

    resetProperties = function(retainPosition) {

      if (!retainPosition) {
        onPositionItems = [];
        onPositionFired = 0;
      }

      onplay_called = false;

      s._hasTimer = null;
      s._a = null;
      s._html5_canplay = false;
      s.bytesLoaded = null;
      s.bytesTotal = null;
      s.duration = (s._iO && s._iO.duration ? s._iO.duration : null);
      s.durationEstimate = null;
      s.buffered = [];

      // legacy: 1D array
      s.eqData = [];

      s.eqData.left = [];
      s.eqData.right = [];

      s.failures = 0;
      s.isBuffering = false;
      s.instanceOptions = {};
      s.instanceCount = 0;
      s.loaded = false;
      s.metadata = {};

      // 0 = uninitialised, 1 = loading, 2 = failed/error, 3 = loaded/success
      s.readyState = 0;

      s.muted = false;
      s.paused = false;

      s.peakData = {
        left: 0,
        right: 0
      };

      s.waveformData = {
        left: [],
        right: []
      };

      s.playState = 0;
      s.position = null;

      s.id3 = {};

    };

    resetProperties();

    /**
     * Pseudo-private SMSound internals
     * --------------------------------
     */

    this._onTimer = function(bForce) {

      /**
       * HTML5-only _whileplaying() etc.
       * called from both HTML5 native events, and polling/interval-based timers
       * mimics flash and fires only when time/duration change, so as to be polling-friendly
       */

      var duration, isNew = false, time, x = {};

      if (s._hasTimer || bForce) {

        // TODO: May not need to track readyState (1 = loading)

        if (s._a && (bForce || ((s.playState > 0 || s.readyState === 1) && !s.paused))) {

          duration = s._get_html5_duration();

          if (duration !== lastHTML5State.duration) {

            lastHTML5State.duration = duration;
            s.duration = duration;
            isNew = true;

          }

          // TODO: investigate why this goes wack if not set/re-set each time.
          s.durationEstimate = s.duration;

          time = (s._a.currentTime * msecScale || 0);

          if (time !== lastHTML5State.time) {

            lastHTML5State.time = time;
            isNew = true;

          }

          if (isNew || bForce) {

            s._whileplaying(time, x, x, x, x);

          }

        }/* else {

          // sm2._wD('_onTimer: Warn for "'+s.id+'": '+(!s._a?'Could not find element. ':'')+(s.playState === 0?'playState bad, 0?':'playState = '+s.playState+', OK'));

          return false;

        }*/

        return isNew;

      }

    };

    this._get_html5_duration = function() {

      var instanceOptions = s._iO,
          // if audio object exists, use its duration - else, instance option duration (if provided - it's a hack, really, and should be retired) OR null
          d = (s._a && s._a.duration ? s._a.duration * msecScale : (instanceOptions && instanceOptions.duration ? instanceOptions.duration : null)),
          result = (d && !isNaN(d) && d !== Infinity ? d : null);

      return result;

    };

    this._apply_loop = function(a, nLoops) {

      /**
       * boolean instead of "loop", for webkit? - spec says string. http://www.w3.org/TR/html-markup/audio.html#audio.attrs.loop
       * note that loop is either off or infinite under HTML5, unlike Flash which allows arbitrary loop counts to be specified.
       */

      // <d>
      if (!a.loop && nLoops > 1) {
        sm2._wD('Note: Native HTML5 looping is infinite.', 1);
      }
      // </d>

      a.loop = (nLoops > 1 ? 'loop' : '');

    };

    this._setup_html5 = function(oOptions) {

      var instanceOptions = mixin(s._iO, oOptions),
          a = useGlobalHTML5Audio ? globalHTML5Audio : s._a,
          dURL = decodeURI(instanceOptions.url),
          sameURL;

      /**
       * "First things first, I, Poppa..." (reset the previous state of the old sound, if playing)
       * Fixes case with devices that can only play one sound at a time
       * Otherwise, other sounds in mid-play will be terminated without warning and in a stuck state
       */

      if (useGlobalHTML5Audio) {

        if (dURL === decodeURI(lastGlobalHTML5URL)) {
          // global HTML5 audio: re-use of URL
          sameURL = true;
        }

      } else if (dURL === decodeURI(lastURL)) {

        // options URL is the same as the "last" URL, and we used (loaded) it
        sameURL = true;

      }

      if (a) {

        if (a._s) {

          if (useGlobalHTML5Audio) {

            if (a._s && a._s.playState && !sameURL) {

              // global HTML5 audio case, and loading a new URL. stop the currently-playing one.
              a._s.stop();

            }

          } else if (!useGlobalHTML5Audio && dURL === decodeURI(lastURL)) {

            // non-global HTML5 reuse case: same url, ignore request
            s._apply_loop(a, instanceOptions.loops);

            return a;

          }

        }

        if (!sameURL) {

          // don't retain onPosition() stuff with new URLs.

          if (lastURL) {
            resetProperties(false);
          }

          // assign new HTML5 URL

          a.src = instanceOptions.url;

          s.url = instanceOptions.url;

          lastURL = instanceOptions.url;

          lastGlobalHTML5URL = instanceOptions.url;

          a._called_load = false;

        }

      } else {

        if (instanceOptions.autoLoad || instanceOptions.autoPlay) {

          s._a = new Audio(instanceOptions.url);
          s._a.load();

        } else {

          // null for stupid Opera 9.64 case
          s._a = (isOpera && opera.version() < 10 ? new Audio(null) : new Audio());

        }

        // assign local reference
        a = s._a;

        a._called_load = false;

        if (useGlobalHTML5Audio) {

          globalHTML5Audio = a;

        }

      }

      s.isHTML5 = true;

      // store a ref on the track
      s._a = a;

      // store a ref on the audio
      a._s = s;

      add_html5_events();

      s._apply_loop(a, instanceOptions.loops);

      if (instanceOptions.autoLoad || instanceOptions.autoPlay) {

        s.load();

      } else {

        // early HTML5 implementation (non-standard)
        a.autobuffer = false;

        // standard ('none' is also an option.)
        a.preload = 'auto';

      }

      return a;

    };

    add_html5_events = function() {

      if (s._a._added_events) {
        return false;
      }

      var f;

      function add(oEvt, oFn, bCapture) {
        return s._a ? s._a.addEventListener(oEvt, oFn, bCapture || false) : null;
      }

      s._a._added_events = true;

      for (f in html5_events) {
        if (html5_events.hasOwnProperty(f)) {
          add(f, html5_events[f]);
        }
      }

      return true;

    };

    remove_html5_events = function() {

      // Remove event listeners

      var f;

      function remove(oEvt, oFn, bCapture) {
        return (s._a ? s._a.removeEventListener(oEvt, oFn, bCapture || false) : null);
      }

      sm2._wD(s.id + ': Removing event listeners');
      s._a._added_events = false;

      for (f in html5_events) {
        if (html5_events.hasOwnProperty(f)) {
          remove(f, html5_events[f]);
        }
      }

    };

    /**
     * Pseudo-private event internals
     * ------------------------------
     */

    this._onload = function(nSuccess) {

      var fN,
          // check for duration to prevent false positives from flash 8 when loading from cache.
          loadOK = !!nSuccess || (!s.isHTML5 && fV === 8 && s.duration);

      // <d>
      fN = s.id + ': ';
      sm2._wD(fN + (loadOK ? 'onload()' : 'Failed to load / invalid sound?' + (!s.duration ? ' Zero-length duration reported.' : ' -') + ' (' + s.url + ')'), (loadOK ? 1 : 2));

      if (!loadOK && !s.isHTML5) {
        if (sm2.sandbox.noRemote === true) {
          sm2._wD(fN + str('noNet'), 1);
        }
        if (sm2.sandbox.noLocal === true) {
          sm2._wD(fN + str('noLocal'), 1);
        }
      }
      // </d>

      s.loaded = loadOK;
      s.readyState = (loadOK ? 3 : 2);
      s._onbufferchange(0);

      if (s._iO.onload) {
        wrapCallback(s, function() {
          s._iO.onload.apply(s, [loadOK]);
        });
      }

      return true;

    };

    this._onbufferchange = function(nIsBuffering) {

      if (s.playState === 0) {
        // ignore if not playing
        return false;
      }

      if ((nIsBuffering && s.isBuffering) || (!nIsBuffering && !s.isBuffering)) {
        return false;
      }

      s.isBuffering = (nIsBuffering === 1);
      
      if (s._iO.onbufferchange) {
        sm2._wD(s.id + ': Buffer state change: ' + nIsBuffering);
        s._iO.onbufferchange.apply(s, [nIsBuffering]);
      }

      return true;

    };

    /**
     * Playback may have stopped due to buffering, or related reason.
     * This state can be encountered on iOS < 6 when auto-play is blocked.
     */

    this._onsuspend = function() {

      if (s._iO.onsuspend) {
        sm2._wD(s.id + ': Playback suspended');
        s._iO.onsuspend.apply(s);
      }

      return true;

    };

    /**
     * flash 9/movieStar + RTMP-only method, should fire only once at most
     * at this point we just recreate failed sounds rather than trying to reconnect
     */

    this._onfailure = function(msg, level, code) {

      s.failures++;
      sm2._wD(s.id + ': Failure (' + s.failures + '): ' + msg);

      if (s._iO.onfailure && s.failures === 1) {
        s._iO.onfailure(msg, level, code);
      } else {
        sm2._wD(s.id + ': Ignoring failure');
      }

    };

    /**
     * flash 9/movieStar + RTMP-only method for unhandled warnings/exceptions from Flash
     * e.g., RTMP "method missing" warning (non-fatal) for getStreamLength on server
     */

    this._onwarning = function(msg, level, code) {

      if (s._iO.onwarning) {
        s._iO.onwarning(msg, level, code);
      }

    };

    this._onfinish = function() {

      // store local copy before it gets trashed...
      var io_onfinish = s._iO.onfinish;

      s._onbufferchange(0);
      s._resetOnPosition(0);

      // reset some state items
      if (s.instanceCount) {

        s.instanceCount--;

        if (!s.instanceCount) {

          // remove onPosition listeners, if any
          detachOnPosition();

          // reset instance options
          s.playState = 0;
          s.paused = false;
          s.instanceCount = 0;
          s.instanceOptions = {};
          s._iO = {};
          stop_html5_timer();

          // reset position, too
          if (s.isHTML5) {
            s.position = 0;
          }

        }

        if (!s.instanceCount || s._iO.multiShotEvents) {
          // fire onfinish for last, or every instance
          if (io_onfinish) {
            sm2._wD(s.id + ': onfinish()');
            wrapCallback(s, function() {
              io_onfinish.apply(s);
            });
          }
        }

      }

    };

    this._whileloading = function(nBytesLoaded, nBytesTotal, nDuration, nBufferLength) {

      var instanceOptions = s._iO;

      s.bytesLoaded = nBytesLoaded;
      s.bytesTotal = nBytesTotal;
      s.duration = Math.floor(nDuration);
      s.bufferLength = nBufferLength;

      if (!s.isHTML5 && !instanceOptions.isMovieStar) {

        if (instanceOptions.duration) {
          // use duration from options, if specified and larger. nobody should be specifying duration in options, actually, and it should be retired.
          s.durationEstimate = (s.duration > instanceOptions.duration) ? s.duration : instanceOptions.duration;
        } else {
          s.durationEstimate = parseInt((s.bytesTotal / s.bytesLoaded) * s.duration, 10);
        }

      } else {

        s.durationEstimate = s.duration;

      }

      // for flash, reflect sequential-load-style buffering
      if (!s.isHTML5) {
        s.buffered = [{
          'start': 0,
          'end': s.duration
        }];
      }

      // allow whileloading to fire even if "load" fired under HTML5, due to HTTP range/partials
      if ((s.readyState !== 3 || s.isHTML5) && instanceOptions.whileloading) {
        instanceOptions.whileloading.apply(s);
      }

    };

    this._whileplaying = function(nPosition, oPeakData, oWaveformDataLeft, oWaveformDataRight, oEQData) {

      var instanceOptions = s._iO,
          eqLeft;

      if (isNaN(nPosition) || nPosition === null) {
        // flash safety net
        return false;
      }

      // Safari HTML5 play() may return small -ve values when starting from position: 0, eg. -50.120396875. Unexpected/invalid per W3, I think. Normalize to 0.
      s.position = Math.max(0, nPosition);

      s._processOnPosition();

      if (!s.isHTML5 && fV > 8) {

        if (instanceOptions.usePeakData && oPeakData !== _undefined && oPeakData) {
          s.peakData = {
            left: oPeakData.leftPeak,
            right: oPeakData.rightPeak
          };
        }

        if (instanceOptions.useWaveformData && oWaveformDataLeft !== _undefined && oWaveformDataLeft) {
          s.waveformData = {
            left: oWaveformDataLeft.split(','),
            right: oWaveformDataRight.split(',')
          };
        }

        if (instanceOptions.useEQData) {
          if (oEQData !== _undefined && oEQData && oEQData.leftEQ) {
            eqLeft = oEQData.leftEQ.split(',');
            s.eqData = eqLeft;
            s.eqData.left = eqLeft;
            if (oEQData.rightEQ !== _undefined && oEQData.rightEQ) {
              s.eqData.right = oEQData.rightEQ.split(',');
            }
          }
        }

      }

      if (s.playState === 1) {

        // special case/hack: ensure buffering is false if loading from cache (and not yet started)
        if (!s.isHTML5 && fV === 8 && !s.position && s.isBuffering) {
          s._onbufferchange(0);
        }

        if (instanceOptions.whileplaying) {
          // flash may call after actual finish
          instanceOptions.whileplaying.apply(s);
        }

      }

      return true;

    };

    this._oncaptiondata = function(oData) {

      /**
       * internal: flash 9 + NetStream (MovieStar/RTMP-only) feature
       *
       * @param {object} oData
       */

      sm2._wD(s.id + ': Caption data received.');

      s.captiondata = oData;

      if (s._iO.oncaptiondata) {
        s._iO.oncaptiondata.apply(s, [oData]);
      }

    };

    this._onmetadata = function(oMDProps, oMDData) {

      /**
       * internal: flash 9 + NetStream (MovieStar/RTMP-only) feature
       * RTMP may include song title, MovieStar content may include encoding info
       *
       * @param {array} oMDProps (names)
       * @param {array} oMDData (values)
       */

      sm2._wD(s.id + ': Metadata received.');

      var oData = {}, i, j;

      for (i = 0, j = oMDProps.length; i < j; i++) {
        oData[oMDProps[i]] = oMDData[i];
      }

      s.metadata = oData;

      if (s._iO.onmetadata) {
        s._iO.onmetadata.call(s, s.metadata);
      }

    };

    this._onid3 = function(oID3Props, oID3Data) {

      /**
       * internal: flash 8 + flash 9 ID3 feature
       * may include artist, song title etc.
       *
       * @param {array} oID3Props (names)
       * @param {array} oID3Data (values)
       */

      sm2._wD(s.id + ': ID3 data received.');

      var oData = [], i, j;

      for (i = 0, j = oID3Props.length; i < j; i++) {
        oData[oID3Props[i]] = oID3Data[i];
      }

      s.id3 = mixin(s.id3, oData);

      if (s._iO.onid3) {
        s._iO.onid3.apply(s);
      }

    };

    // flash/RTMP-only

    this._onconnect = function(bSuccess) {

      bSuccess = (bSuccess === 1);
      sm2._wD(s.id + ': ' + (bSuccess ? 'Connected.' : 'Failed to connect? - ' + s.url), (bSuccess ? 1 : 2));
      s.connected = bSuccess;

      if (bSuccess) {

        s.failures = 0;

        if (idCheck(s.id)) {
          if (s.getAutoPlay()) {
            // only update the play state if auto playing
            s.play(_undefined, s.getAutoPlay());
          } else if (s._iO.autoLoad) {
            s.load();
          }
        }

        if (s._iO.onconnect) {
          s._iO.onconnect.apply(s, [bSuccess]);
        }

      }

    };

    this._ondataerror = function(sError) {

      // flash 9 wave/eq data handler
      // hack: called at start, and end from flash at/after onfinish()
      if (s.playState > 0) {
        sm2._wD(s.id + ': Data error: ' + sError);
        if (s._iO.ondataerror) {
          s._iO.ondataerror.apply(s);
        }
      }

    };

    // <d>
    this._debug();
    // </d>

  }; // SMSound()

  /**
   * Private SoundManager internals
   * ------------------------------
   */

  getDocument = function() {

    return (doc.body || doc.getElementsByTagName('div')[0]);

  };

  id = function(sID) {

    return doc.getElementById(sID);

  };

  mixin = function(oMain, oAdd) {

    // non-destructive merge
    var o1 = (oMain || {}), o2, o;

    // if unspecified, o2 is the default options object
    o2 = (oAdd === _undefined ? sm2.defaultOptions : oAdd);

    for (o in o2) {

      if (o2.hasOwnProperty(o) && o1[o] === _undefined) {

        if (typeof o2[o] !== 'object' || o2[o] === null) {

          // assign directly
          o1[o] = o2[o];

        } else {

          // recurse through o2
          o1[o] = mixin(o1[o], o2[o]);

        }

      }

    }

    return o1;

  };

  wrapCallback = function(oSound, callback) {

    /**
     * 03/03/2013: Fix for Flash Player 11.6.602.171 + Flash 8 (flashVersion = 8) SWF issue
     * setTimeout() fix for certain SMSound callbacks like onload() and onfinish(), where subsequent calls like play() and load() fail when Flash Player 11.6.602.171 is installed, and using soundManager with flashVersion = 8 (which is the default).
     * Not sure of exact cause. Suspect race condition and/or invalid (NaN-style) position argument trickling down to the next JS -> Flash _start() call, in the play() case.
     * Fix: setTimeout() to yield, plus safer null / NaN checking on position argument provided to Flash.
     * https://getsatisfaction.com/schillmania/topics/recent_chrome_update_seems_to_have_broken_my_sm2_audio_player
     */
    if (!oSound.isHTML5 && fV === 8) {
      window.setTimeout(callback, 0);
    } else {
      callback();
    }

  };

  // additional soundManager properties that soundManager.setup() will accept

  extraOptions = {
    'onready': 1,
    'ontimeout': 1,
    'defaultOptions': 1,
    'flash9Options': 1,
    'movieStarOptions': 1
  };

  assign = function(o, oParent) {

    /**
     * recursive assignment of properties, soundManager.setup() helper
     * allows property assignment based on whitelist
     */

    var i,
        result = true,
        hasParent = (oParent !== _undefined),
        setupOptions = sm2.setupOptions,
        bonusOptions = extraOptions;

    // <d>

    // if soundManager.setup() called, show accepted parameters.

    if (o === _undefined) {

      result = [];

      for (i in setupOptions) {

        if (setupOptions.hasOwnProperty(i)) {
          result.push(i);
        }

      }

      for (i in bonusOptions) {

        if (bonusOptions.hasOwnProperty(i)) {

          if (typeof sm2[i] === 'object') {
            result.push(i + ': {...}');
          } else if (sm2[i] instanceof Function) {
            result.push(i + ': function() {...}');
          } else {
            result.push(i);
          }

        }

      }

      sm2._wD(str('setup', result.join(', ')));

      return false;

    }

    // </d>

    for (i in o) {

      if (o.hasOwnProperty(i)) {

        // if not an {object} we want to recurse through...

        if (typeof o[i] !== 'object' || o[i] === null || o[i] instanceof Array || o[i] instanceof RegExp) {

          // check "allowed" options

          if (hasParent && bonusOptions[oParent] !== _undefined) {

            // valid recursive / nested object option, eg., { defaultOptions: { volume: 50 } }
            sm2[oParent][i] = o[i];

          } else if (setupOptions[i] !== _undefined) {

            // special case: assign to setupOptions object, which soundManager property references
            sm2.setupOptions[i] = o[i];

            // assign directly to soundManager, too
            sm2[i] = o[i];

          } else if (bonusOptions[i] === _undefined) {

            // invalid or disallowed parameter. complain.
            complain(str((sm2[i] === _undefined ? 'setupUndef' : 'setupError'), i), 2);

            result = false;

          } else {

            /**
             * valid extraOptions (bonusOptions) parameter.
             * is it a method, like onready/ontimeout? call it.
             * multiple parameters should be in an array, eg. soundManager.setup({onready: [myHandler, myScope]});
             */

            if (sm2[i] instanceof Function) {

              sm2[i].apply(sm2, (o[i] instanceof Array ? o[i] : [o[i]]));

            } else {

              // good old-fashioned direct assignment
              sm2[i] = o[i];

            }

          }

        } else {

          // recursion case, eg., { defaultOptions: { ... } }

          if (bonusOptions[i] === _undefined) {

            // invalid or disallowed parameter. complain.
            complain(str((sm2[i] === _undefined ? 'setupUndef' : 'setupError'), i), 2);

            result = false;

          } else {

            // recurse through object
            return assign(o[i], i);

          }

        }

      }

    }

    return result;

  };

  function preferFlashCheck(kind) {

    // whether flash should play a given type
    return (sm2.preferFlash && hasFlash && !sm2.ignoreFlash && (sm2.flash[kind] !== _undefined && sm2.flash[kind]));

  }

  /**
   * Internal DOM2-level event helpers
   * ---------------------------------
   */

  event = (function() {

    // normalize event methods
    var old = (window.attachEvent),
    evt = {
      add: (old ? 'attachEvent' : 'addEventListener'),
      remove: (old ? 'detachEvent' : 'removeEventListener')
    };

    // normalize "on" event prefix, optional capture argument
    function getArgs(oArgs) {

      var args = slice.call(oArgs),
          len = args.length;

      if (old) {
        // prefix
        args[1] = 'on' + args[1];
        if (len > 3) {
          // no capture
          args.pop();
        }
      } else if (len === 3) {
        args.push(false);
      }

      return args;

    }

    function apply(args, sType) {

      // normalize and call the event method, with the proper arguments
      var element = args.shift(),
          method = [evt[sType]];

      if (old) {
        // old IE can't do apply().
        element[method](args[0], args[1]);
      } else {
        element[method].apply(element, args);
      }

    }

    function add() {
      apply(getArgs(arguments), 'add');
    }

    function remove() {
      apply(getArgs(arguments), 'remove');
    }

    return {
      'add': add,
      'remove': remove
    };

  }());

  /**
   * Internal HTML5 event handling
   * -----------------------------
   */

  function html5_event(oFn) {

    // wrap html5 event handlers so we don't call them on destroyed and/or unloaded sounds

    return function(e) {

      var s = this._s,
          result;

      if (!s || !s._a) {
        // <d>
        if (s && s.id) {
          sm2._wD(s.id + ': Ignoring ' + e.type);
        } else {
          sm2._wD(h5 + 'Ignoring ' + e.type);
        }
        // </d>
        result = null;
      } else {
        result = oFn.call(this, e);
      }

      return result;

    };

  }

  html5_events = {

    // HTML5 event-name-to-handler map

    abort: html5_event(function() {

      sm2._wD(this._s.id + ': abort');

    }),

    // enough has loaded to play

    canplay: html5_event(function() {

      var s = this._s,
          position1K;

      if (s._html5_canplay) {
        // this event has already fired. ignore.
        return true;
      }

      s._html5_canplay = true;
      sm2._wD(s.id + ': canplay');
      s._onbufferchange(0);

      // position according to instance options
      position1K = (s._iO.position !== _undefined && !isNaN(s._iO.position) ? s._iO.position/msecScale : null);

      // set the position if position was provided before the sound loaded
      if (this.currentTime !== position1K) {
        sm2._wD(s.id + ': canplay: Setting position to ' + position1K);
        try {
          this.currentTime = position1K;
        } catch(ee) {
          sm2._wD(s.id + ': canplay: Setting position of ' + position1K + ' failed: ' + ee.message, 2);
        }
      }

      // hack for HTML5 from/to case
      if (s._iO._oncanplay) {
        s._iO._oncanplay();
      }

    }),

    canplaythrough: html5_event(function() {

      var s = this._s;

      if (!s.loaded) {
        s._onbufferchange(0);
        s._whileloading(s.bytesLoaded, s.bytesTotal, s._get_html5_duration());
        s._onload(true);
      }

    }),

    durationchange: html5_event(function() {

      // durationchange may fire at various times, probably the safest way to capture accurate/final duration.

      var s = this._s,
          duration;

      duration = s._get_html5_duration();

      if (!isNaN(duration) && duration !== s.duration) {

        sm2._wD(this._s.id + ': durationchange (' + duration + ')' + (s.duration ? ', previously ' + s.duration : ''));

        s.durationEstimate = s.duration = duration;

      }

    }),

    // TODO: Reserved for potential use
    /*
    emptied: html5_event(function() {

      sm2._wD(this._s.id + ': emptied');

    }),
    */

    ended: html5_event(function() {

      var s = this._s;

      sm2._wD(s.id + ': ended');

      s._onfinish();

    }),

    error: html5_event(function() {

      sm2._wD(this._s.id + ': HTML5 error, code ' + this.error.code);
      /**
       * HTML5 error codes, per W3C
       * Error 1: Client aborted download at user's request.
       * Error 2: Network error after load started.
       * Error 3: Decoding issue.
       * Error 4: Media (audio file) not supported.
       * Reference: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#error-codes
       */
      // call load with error state?
      this._s._onload(false);

    }),

    loadeddata: html5_event(function() {

      var s = this._s;

      sm2._wD(s.id + ': loadeddata');

      // safari seems to nicely report progress events, eventually totalling 100%
      if (!s._loaded && !isSafari) {
        s.duration = s._get_html5_duration();
      }

    }),

    loadedmetadata: html5_event(function() {

      sm2._wD(this._s.id + ': loadedmetadata');

    }),

    loadstart: html5_event(function() {

      sm2._wD(this._s.id + ': loadstart');
      // assume buffering at first
      this._s._onbufferchange(1);

    }),

    play: html5_event(function() {

      // sm2._wD(this._s.id + ': play()');
      // once play starts, no buffering
      this._s._onbufferchange(0);

    }),

    playing: html5_event(function() {

      sm2._wD(this._s.id + ': playing ' + String.fromCharCode(9835));
      // once play starts, no buffering
      this._s._onbufferchange(0);

    }),

    progress: html5_event(function(e) {

      // note: can fire repeatedly after "loaded" event, due to use of HTTP range/partials

      var s = this._s,
          i, j, progStr, buffered = 0,
          isProgress = (e.type === 'progress'),
          ranges = e.target.buffered,
          // firefox 3.6 implements e.loaded/total (bytes)
          loaded = (e.loaded || 0),
          total = (e.total || 1);

      // reset the "buffered" (loaded byte ranges) array
      s.buffered = [];

      if (ranges && ranges.length) {

        // if loaded is 0, try TimeRanges implementation as % of load
        // https://developer.mozilla.org/en/DOM/TimeRanges

        // re-build "buffered" array
        // HTML5 returns seconds. SM2 API uses msec for setPosition() etc., whether Flash or HTML5.
        for (i = 0, j = ranges.length; i < j; i++) {
          s.buffered.push({
            'start': ranges.start(i) * msecScale,
            'end': ranges.end(i) * msecScale
          });
        }

        // use the last value locally
        buffered = (ranges.end(0) - ranges.start(0)) * msecScale;

        // linear case, buffer sum; does not account for seeking and HTTP partials / byte ranges
        loaded = Math.min(1, buffered / (e.target.duration * msecScale));

        // <d>
        if (isProgress && ranges.length > 1) {
          progStr = [];
          j = ranges.length;
          for (i = 0; i < j; i++) {
            progStr.push((e.target.buffered.start(i) * msecScale) + '-' + (e.target.buffered.end(i) * msecScale));
          }
          sm2._wD(this._s.id + ': progress, timeRanges: ' + progStr.join(', '));
        }

        if (isProgress && !isNaN(loaded)) {
          sm2._wD(this._s.id + ': progress, ' + Math.floor(loaded * 100) + '% loaded');
        }
        // </d>

      }

      if (!isNaN(loaded)) {

        // TODO: prevent calls with duplicate values.
        s._whileloading(loaded, total, s._get_html5_duration());
        if (loaded && total && loaded === total) {
          // in case "onload" doesn't fire (eg. gecko 1.9.2)
          html5_events.canplaythrough.call(this, e);
        }

      }

    }),

    ratechange: html5_event(function() {

      sm2._wD(this._s.id + ': ratechange');

    }),

    suspend: html5_event(function(e) {

      // download paused/stopped, may have finished (eg. onload)
      var s = this._s;

      sm2._wD(this._s.id + ': suspend');
      html5_events.progress.call(this, e);
      s._onsuspend();

    }),

    stalled: html5_event(function() {

      sm2._wD(this._s.id + ': stalled');

    }),

    timeupdate: html5_event(function() {

      this._s._onTimer();

    }),

    waiting: html5_event(function() {

      var s = this._s;

      // see also: seeking
      sm2._wD(this._s.id + ': waiting');

      // playback faster than download rate, etc.
      s._onbufferchange(1);

    })

  };

  html5OK = function(iO) {

    // playability test based on URL or MIME type

    var result;

    if (!iO || (!iO.type && !iO.url && !iO.serverURL)) {

      // nothing to check
      result = false;

    } else if (iO.serverURL || (iO.type && preferFlashCheck(iO.type))) {

      // RTMP, or preferring flash
      result = false;

    } else {

      // Use type, if specified. Pass data: URIs to HTML5. If HTML5-only mode, no other options, so just give 'er
      result = ((iO.type ? html5CanPlay({type:iO.type}) : html5CanPlay({url:iO.url}) || sm2.html5Only || iO.url.match(/data\:/i)));

    }

    return result;

  };

  html5Unload = function(oAudio) {

    /**
     * Internal method: Unload media, and cancel any current/pending network requests.
     * Firefox can load an empty URL, which allegedly destroys the decoder and stops the download.
     * https://developer.mozilla.org/En/Using_audio_and_video_in_Firefox#Stopping_the_download_of_media
     * However, Firefox has been seen loading a relative URL from '' and thus requesting the hosting page on unload.
     * Other UA behaviour is unclear, so everyone else gets an about:blank-style URL.
     */

    var url;

    if (oAudio) {

      // Firefox and Chrome accept short WAVe data: URIs. Chome dislikes audio/wav, but accepts audio/wav for data: MIME.
      // Desktop Safari complains / fails on data: URI, so it gets about:blank.
      url = (isSafari ? emptyURL : (sm2.html5.canPlayType('audio/wav') ? emptyWAV : emptyURL));

      oAudio.src = url;

      // reset some state, too
      if (oAudio._called_unload !== _undefined) {
        oAudio._called_load = false;
      }

    }

    if (useGlobalHTML5Audio) {

      // ensure URL state is trashed, also
      lastGlobalHTML5URL = null;

    }

    return url;

  };

  html5CanPlay = function(o) {

    /**
     * Try to find MIME, test and return truthiness
     * o = {
     *  url: '/path/to/an.mp3',
     *  type: 'audio/mp3'
     * }
     */

    if (!sm2.useHTML5Audio || !sm2.hasHTML5) {
      return false;
    }

    var url = (o.url || null),
        mime = (o.type || null),
        aF = sm2.audioFormats,
        result,
        offset,
        fileExt,
        item;

    // account for known cases like audio/mp3

    if (mime && sm2.html5[mime] !== _undefined) {
      return (sm2.html5[mime] && !preferFlashCheck(mime));
    }

    if (!html5Ext) {
      
      html5Ext = [];
      
      for (item in aF) {
      
        if (aF.hasOwnProperty(item)) {
      
          html5Ext.push(item);
      
          if (aF[item].related) {
            html5Ext = html5Ext.concat(aF[item].related);
          }
      
        }
      
      }
      
      html5Ext = new RegExp('\\.('+html5Ext.join('|')+')(\\?.*)?$','i');
    
    }

    // TODO: Strip URL queries, etc.
    fileExt = (url ? url.toLowerCase().match(html5Ext) : null);

    if (!fileExt || !fileExt.length) {
      
      if (!mime) {
      
        result = false;
      
      } else {
      
        // audio/mp3 -> mp3, result should be known
        offset = mime.indexOf(';');
      
        // strip "audio/X; codecs..."
        fileExt = (offset !== -1 ? mime.substr(0,offset) : mime).substr(6);
      
      }
    
    } else {
    
      // match the raw extension name - "mp3", for example
      fileExt = fileExt[1];
    
    }

    if (fileExt && sm2.html5[fileExt] !== _undefined) {
    
      // result known
      result = (sm2.html5[fileExt] && !preferFlashCheck(fileExt));
    
    } else {
    
      mime = 'audio/' + fileExt;
      result = sm2.html5.canPlayType({type:mime});
    
      sm2.html5[fileExt] = result;
    
      // sm2._wD('canPlayType, found result: ' + result);
      result = (result && sm2.html5[mime] && !preferFlashCheck(mime));
    }

    return result;

  };

  testHTML5 = function() {

    /**
     * Internal: Iterates over audioFormats, determining support eg. audio/mp3, audio/mpeg and so on
     * assigns results to html5[] and flash[].
     */

    if (!sm2.useHTML5Audio || !sm2.hasHTML5) {
    
      // without HTML5, we need Flash.
      sm2.html5.usingFlash = true;
      needsFlash = true;
    
      return false;
    
    }

    // double-whammy: Opera 9.64 throws WRONG_ARGUMENTS_ERR if no parameter passed to Audio(), and Webkit + iOS happily tries to load "null" as a URL. :/
    var a = (Audio !== _undefined ? (isOpera && opera.version() < 10 ? new Audio(null) : new Audio()) : null),
        item, lookup, support = {}, aF, i;

    function cp(m) {

      var canPlay, j,
          result = false,
          isOK = false;

      if (!a || typeof a.canPlayType !== 'function') {
        return result;
      }

      if (m instanceof Array) {
    
        // iterate through all mime types, return any successes
    
        for (i = 0, j = m.length; i < j; i++) {
    
          if (sm2.html5[m[i]] || a.canPlayType(m[i]).match(sm2.html5Test)) {
    
            isOK = true;
            sm2.html5[m[i]] = true;
    
            // note flash support, too
            sm2.flash[m[i]] = !!(m[i].match(flashMIME));
    
          }
    
        }
    
        result = isOK;
    
      } else {
    
        canPlay = (a && typeof a.canPlayType === 'function' ? a.canPlayType(m) : false);
        result = !!(canPlay && (canPlay.match(sm2.html5Test)));
    
      }

      return result;

    }

    // test all registered formats + codecs

    aF = sm2.audioFormats;

    for (item in aF) {

      if (aF.hasOwnProperty(item)) {

        lookup = 'audio/' + item;

        support[item] = cp(aF[item].type);

        // write back generic type too, eg. audio/mp3
        support[lookup] = support[item];

        // assign flash
        if (item.match(flashMIME)) {

          sm2.flash[item] = true;
          sm2.flash[lookup] = true;

        } else {

          sm2.flash[item] = false;
          sm2.flash[lookup] = false;

        }

        // assign result to related formats, too

        if (aF[item] && aF[item].related) {

          for (i = aF[item].related.length - 1; i >= 0; i--) {

            // eg. audio/m4a
            support['audio/' + aF[item].related[i]] = support[item];
            sm2.html5[aF[item].related[i]] = support[item];
            sm2.flash[aF[item].related[i]] = support[item];

          }

        }

      }

    }

    support.canPlayType = (a ? cp : null);
    sm2.html5 = mixin(sm2.html5, support);

    sm2.html5.usingFlash = featureCheck();
    needsFlash = sm2.html5.usingFlash;

    return true;

  };

  strings = {

    // <d>
    notReady: 'Unavailable - wait until onready() has fired.',
    notOK: 'Audio support is not available.',
    domError: sm + 'exception caught while appending SWF to DOM.',
    spcWmode: 'Removing wmode, preventing known SWF loading issue(s)',
    swf404: smc + 'Verify that %s is a valid path.',
    tryDebug: 'Try ' + sm + '.debugFlash = true for more security details (output goes to SWF.)',
    checkSWF: 'See SWF output for more debug info.',
    localFail: smc + 'Non-HTTP page (' + doc.location.protocol + ' URL?) Review Flash player security settings for this special case:\nhttp://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager04.html\nMay need to add/allow path, eg. c:/sm2/ or /users/me/sm2/',
    waitFocus: smc + 'Special case: Waiting for SWF to load with window focus...',
    waitForever: smc + 'Waiting indefinitely for Flash (will recover if unblocked)...',
    waitSWF: smc + 'Waiting for 100% SWF load...',
    needFunction: smc + 'Function object expected for %s',
    badID: 'Sound ID "%s" should be a string, starting with a non-numeric character',
    currentObj: smc + '_debug(): Current sound objects',
    waitOnload: smc + 'Waiting for window.onload()',
    docLoaded: smc + 'Document already loaded',
    onload: smc + 'initComplete(): calling soundManager.onload()',
    onloadOK: sm + '.onload() complete',
    didInit: smc + 'init(): Already called?',
    secNote: 'Flash security note: Network/internet URLs will not load due to security restrictions. Access can be configured via Flash Player Global Security Settings Page: http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager04.html',
    badRemove: smc + 'Failed to remove Flash node.',
    shutdown: sm + '.disable(): Shutting down',
    queue: smc + 'Queueing %s handler',
    smError: 'SMSound.load(): Exception: JS-Flash communication failed, or JS error.',
    fbTimeout: 'No flash response, applying .' + swfCSS.swfTimedout + ' CSS...',
    fbLoaded: 'Flash loaded',
    fbHandler: smc + 'flashBlockHandler()',
    manURL: 'SMSound.load(): Using manually-assigned URL',
    onURL: sm + '.load(): current URL already assigned.',
    badFV: sm + '.flashVersion must be 8 or 9. "%s" is invalid. Reverting to %s.',
    as2loop: 'Note: Setting stream:false so looping can work (flash 8 limitation)',
    noNSLoop: 'Note: Looping not implemented for MovieStar formats',
    needfl9: 'Note: Switching to flash 9, required for MP4 formats.',
    mfTimeout: 'Setting flashLoadTimeout = 0 (infinite) for off-screen, mobile flash case',
    needFlash: smc + 'Fatal error: Flash is needed to play some required formats, but is not available.',
    gotFocus: smc + 'Got window focus.',
    policy: 'Enabling usePolicyFile for data access',
    setup: sm + '.setup(): allowed parameters: %s',
    setupError: sm + '.setup(): "%s" cannot be assigned with this method.',
    setupUndef: sm + '.setup(): Could not find option "%s"',
    setupLate: sm + '.setup(): url, flashVersion and html5Test property changes will not take effect until reboot().',
    noURL: smc + 'Flash URL required. Call soundManager.setup({url:...}) to get started.',
    sm2Loaded: 'SoundManager 2: Ready. ' + String.fromCharCode(10003),
    reset: sm + '.reset(): Removing event callbacks',
    mobileUA: 'Mobile UA detected, preferring HTML5 by default.',
    globalHTML5: 'Using singleton HTML5 Audio() pattern for this device.',
    ignoreMobile: 'Ignoring mobile restrictions for this device.'
    // </d>

  };

  str = function() {

    // internal string replace helper.
    // arguments: o [,items to replace]
    // <d>

    var args,
        i, j, o,
        sstr;

    // real array, please
    args = slice.call(arguments);

    // first argument
    o = args.shift();

    sstr = (strings && strings[o] ? strings[o] : '');

    if (sstr && args && args.length) {
      for (i = 0, j = args.length; i < j; i++) {
        sstr = sstr.replace('%s', args[i]);
      }
    }

    return sstr;
    // </d>

  };

  loopFix = function(sOpt) {

    // flash 8 requires stream = false for looping to work
    if (fV === 8 && sOpt.loops > 1 && sOpt.stream) {
      _wDS('as2loop');
      sOpt.stream = false;
    }

    return sOpt;

  };

  policyFix = function(sOpt, sPre) {

    if (sOpt && !sOpt.usePolicyFile && (sOpt.onid3 || sOpt.usePeakData || sOpt.useWaveformData || sOpt.useEQData)) {
      sm2._wD((sPre || '') + str('policy'));
      sOpt.usePolicyFile = true;
    }

    return sOpt;

  };

  complain = function(sMsg) {

    // <d>
    if (hasConsole && console.warn !== _undefined) {
      console.warn(sMsg);
    } else {
      sm2._wD(sMsg);
    }
    // </d>

  };

  doNothing = function() {

    return false;

  };

  disableObject = function(o) {

    var oProp;

    for (oProp in o) {
      if (o.hasOwnProperty(oProp) && typeof o[oProp] === 'function') {
        o[oProp] = doNothing;
      }
    }

    oProp = null;

  };

  failSafely = function(bNoDisable) {

    // general failure exception handler

    if (bNoDisable === _undefined) {
      bNoDisable = false;
    }

    if (disabled || bNoDisable) {
      sm2.disable(bNoDisable);
    }

  };

  normalizeMovieURL = function(smURL) {

    var urlParams = null, url;

    if (smURL) {
      
      if (smURL.match(/\.swf(\?.*)?$/i)) {
      
        urlParams = smURL.substr(smURL.toLowerCase().lastIndexOf('.swf?') + 4);
      
        if (urlParams) {
          // assume user knows what they're doing
          return smURL;
        }
      
      } else if (smURL.lastIndexOf('/') !== smURL.length - 1) {
      
        // append trailing slash, if needed
        smURL += '/';
      
      }
    
    }

    url = (smURL && smURL.lastIndexOf('/') !== - 1 ? smURL.substr(0, smURL.lastIndexOf('/') + 1) : './') + sm2.movieURL;

    if (sm2.noSWFCache) {
      url += ('?ts=' + new Date().getTime());
    }

    return url;

  };

  setVersionInfo = function() {

    // short-hand for internal use

    fV = parseInt(sm2.flashVersion, 10);

    if (fV !== 8 && fV !== 9) {
      sm2._wD(str('badFV', fV, defaultFlashVersion));
      sm2.flashVersion = fV = defaultFlashVersion;
    }

    // debug flash movie, if applicable

    var isDebug = (sm2.debugMode || sm2.debugFlash ? '_debug.swf' : '.swf');

    if (sm2.useHTML5Audio && !sm2.html5Only && sm2.audioFormats.mp4.required && fV < 9) {
      sm2._wD(str('needfl9'));
      sm2.flashVersion = fV = 9;
    }

    sm2.version = sm2.versionNumber + (sm2.html5Only ? ' (HTML5-only mode)' : (fV === 9 ? ' (AS3/Flash 9)' : ' (AS2/Flash 8)'));

    // set up default options
    if (fV > 8) {
    
      // +flash 9 base options
      sm2.defaultOptions = mixin(sm2.defaultOptions, sm2.flash9Options);
      sm2.features.buffering = true;
    
      // +moviestar support
      sm2.defaultOptions = mixin(sm2.defaultOptions, sm2.movieStarOptions);
      sm2.filePatterns.flash9 = new RegExp('\\.(mp3|' + netStreamTypes.join('|') + ')(\\?.*)?$', 'i');
      sm2.features.movieStar = true;
    
    } else {
    
      sm2.features.movieStar = false;
    
    }

    // regExp for flash canPlay(), etc.
    sm2.filePattern = sm2.filePatterns[(fV !== 8 ? 'flash9' : 'flash8')];

    // if applicable, use _debug versions of SWFs
    sm2.movieURL = (fV === 8 ? 'soundmanager2.swf' : 'soundmanager2_flash9.swf').replace('.swf', isDebug);

    sm2.features.peakData = sm2.features.waveformData = sm2.features.eqData = (fV > 8);

  };

  setPolling = function(bPolling, bHighPerformance) {

    if (!flash) {
      return false;
    }

    flash._setPolling(bPolling, bHighPerformance);

  };

  initDebug = function() {

    // starts debug mode, creating output <div> for UAs without console object

    // allow force of debug mode via URL
    // <d>
    if (sm2.debugURLParam.test(wl)) {
      sm2.setupOptions.debugMode = sm2.debugMode = true;
    }

    if (id(sm2.debugID)) {
      return false;
    }

    var oD, oDebug, oTarget, oToggle, tmp;

    if (sm2.debugMode && !id(sm2.debugID) && (!hasConsole || !sm2.useConsole || !sm2.consoleOnly)) {

      oD = doc.createElement('div');
      oD.id = sm2.debugID + '-toggle';

      oToggle = {
        'position': 'fixed',
        'bottom': '0px',
        'right': '0px',
        'width': '1.2em',
        'height': '1.2em',
        'lineHeight': '1.2em',
        'margin': '2px',
        'textAlign': 'center',
        'border': '1px solid #999',
        'cursor': 'pointer',
        'background': '#fff',
        'color': '#333',
        'zIndex': 10001
      };

      oD.appendChild(doc.createTextNode('-'));
      oD.onclick = toggleDebug;
      oD.title = 'Toggle SM2 debug console';

      if (ua.match(/msie 6/i)) {
        oD.style.position = 'absolute';
        oD.style.cursor = 'hand';
      }

      for (tmp in oToggle) {
        if (oToggle.hasOwnProperty(tmp)) {
          oD.style[tmp] = oToggle[tmp];
        }
      }

      oDebug = doc.createElement('div');
      oDebug.id = sm2.debugID;
      oDebug.style.display = (sm2.debugMode ? 'block' : 'none');

      if (sm2.debugMode && !id(oD.id)) {
        try {
          oTarget = getDocument();
          oTarget.appendChild(oD);
        } catch(e2) {
          throw new Error(str('domError') + ' \n' + e2.toString());
        }
        oTarget.appendChild(oDebug);
      }

    }

    oTarget = null;
    // </d>

  };

  idCheck = this.getSoundById;

  // <d>
  _wDS = function(o, errorLevel) {

    return (!o ? '' : sm2._wD(str(o), errorLevel));

  };

  toggleDebug = function() {

    var o = id(sm2.debugID),
    oT = id(sm2.debugID + '-toggle');

    if (!o) {
      return false;
    }

    if (debugOpen) {
      // minimize
      oT.innerHTML = '+';
      o.style.display = 'none';
    } else {
      oT.innerHTML = '-';
      o.style.display = 'block';
    }

    debugOpen = !debugOpen;

  };

  debugTS = function(sEventType, bSuccess, sMessage) {

    // troubleshooter debug hooks

    if (window.sm2Debugger !== _undefined) {
      try {
        sm2Debugger.handleEvent(sEventType, bSuccess, sMessage);
      } catch(e) {
        // oh well
        return false;
      }
    }

    return true;

  };
  // </d>

  getSWFCSS = function() {

    var css = [];

    if (sm2.debugMode) {
      css.push(swfCSS.sm2Debug);
    }

    if (sm2.debugFlash) {
      css.push(swfCSS.flashDebug);
    }

    if (sm2.useHighPerformance) {
      css.push(swfCSS.highPerf);
    }

    return css.join(' ');

  };

  flashBlockHandler = function() {

    // *possible* flash block situation.

    var name = str('fbHandler'),
        p = sm2.getMoviePercent(),
        css = swfCSS,
        error = {
          type:'FLASHBLOCK'
        };

    if (sm2.html5Only) {
      // no flash, or unused
      return false;
    }

    if (!sm2.ok()) {

      if (needsFlash) {
        // make the movie more visible, so user can fix
        sm2.oMC.className = getSWFCSS() + ' ' + css.swfDefault + ' ' + (p === null ? css.swfTimedout : css.swfError);
        sm2._wD(name + ': ' + str('fbTimeout') + (p ? ' (' + str('fbLoaded') + ')' : ''));
      }

      sm2.didFlashBlock = true;

      // fire onready(), complain lightly
      processOnEvents({
        type: 'ontimeout',
        ignoreInit: true,
        error: error
      });

      catchError(error);

    } else {

      // SM2 loaded OK (or recovered)

      // <d>
      if (sm2.didFlashBlock) {
        sm2._wD(name + ': Unblocked');
      }
      // </d>

      if (sm2.oMC) {
        sm2.oMC.className = [getSWFCSS(), css.swfDefault, css.swfLoaded + (sm2.didFlashBlock ? ' ' + css.swfUnblocked : '')].join(' ');
      }

    }

  };

  addOnEvent = function(sType, oMethod, oScope) {

    if (on_queue[sType] === _undefined) {
      on_queue[sType] = [];
    }

    on_queue[sType].push({
      'method': oMethod,
      'scope': (oScope || null),
      'fired': false
    });

  };

  processOnEvents = function(oOptions) {

    // if unspecified, assume OK/error

    if (!oOptions) {
      oOptions = {
        type: (sm2.ok() ? 'onready' : 'ontimeout')
      };
    }

    if (!didInit && oOptions && !oOptions.ignoreInit) {
      // not ready yet.
      return false;
    }

    if (oOptions.type === 'ontimeout' && (sm2.ok() || (disabled && !oOptions.ignoreInit))) {
      // invalid case
      return false;
    }

    var status = {
          success: (oOptions && oOptions.ignoreInit ? sm2.ok() : !disabled)
        },

        // queue specified by type, or none
        srcQueue = (oOptions && oOptions.type ? on_queue[oOptions.type] || [] : []),

        queue = [], i, j,
        args = [status],
        canRetry = (needsFlash && !sm2.ok());

    if (oOptions.error) {
      args[0].error = oOptions.error;
    }

    for (i = 0, j = srcQueue.length; i < j; i++) {
      if (srcQueue[i].fired !== true) {
        queue.push(srcQueue[i]);
      }
    }

    if (queue.length) {
    
      // sm2._wD(sm + ': Firing ' + queue.length + ' ' + oOptions.type + '() item' + (queue.length === 1 ? '' : 's')); 
      for (i = 0, j = queue.length; i < j; i++) {
      
        if (queue[i].scope) {
          queue[i].method.apply(queue[i].scope, args);
        } else {
          queue[i].method.apply(this, args);
        }
      
        if (!canRetry) {
          // useFlashBlock and SWF timeout case doesn't count here.
          queue[i].fired = true;
      
        }
      
      }
    
    }

    return true;

  };

  initUserOnload = function() {

    window.setTimeout(function() {

      if (sm2.useFlashBlock) {
        flashBlockHandler();
      }

      processOnEvents();

      // call user-defined "onload", scoped to window

      if (typeof sm2.onload === 'function') {
        _wDS('onload', 1);
        sm2.onload.apply(window);
        _wDS('onloadOK', 1);
      }

      if (sm2.waitForWindowLoad) {
        event.add(window, 'load', initUserOnload);
      }

    }, 1);

  };

  detectFlash = function() {

    /**
     * Hat tip: Flash Detect library (BSD, (C) 2007) by Carl "DocYes" S. Yestrau
     * http://featureblend.com/javascript-flash-detection-library.html / http://featureblend.com/license.txt
     */

    if (hasFlash !== _undefined) {
      // this work has already been done.
      return hasFlash;
    }

    var hasPlugin = false, n = navigator, nP = n.plugins, obj, type, types, AX = window.ActiveXObject;

    if (nP && nP.length) {
      
      type = 'application/x-shockwave-flash';
      types = n.mimeTypes;
      
      if (types && types[type] && types[type].enabledPlugin && types[type].enabledPlugin.description) {
        hasPlugin = true;
      }
    
    } else if (AX !== _undefined && !ua.match(/MSAppHost/i)) {
    
      // Windows 8 Store Apps (MSAppHost) are weird (compatibility?) and won't complain here, but will barf if Flash/ActiveX object is appended to the DOM.
      try {
        obj = new AX('ShockwaveFlash.ShockwaveFlash');
      } catch(e) {
        // oh well
        obj = null;
      }
      
      hasPlugin = (!!obj);
      
      // cleanup, because it is ActiveX after all
      obj = null;
    
    }

    hasFlash = hasPlugin;

    return hasPlugin;

  };

featureCheck = function() {

    var flashNeeded,
        item,
        formats = sm2.audioFormats,
        // iPhone <= 3.1 has broken HTML5 audio(), but firmware 3.2 (original iPad) + iOS4 works.
        isSpecial = (is_iDevice && !!(ua.match(/os (1|2|3_0|3_1)\s/i)));

    if (isSpecial) {

      // has Audio(), but is broken; let it load links directly.
      sm2.hasHTML5 = false;

      // ignore flash case, however
      sm2.html5Only = true;

      // hide the SWF, if present
      if (sm2.oMC) {
        sm2.oMC.style.display = 'none';
      }

    } else {

      if (sm2.useHTML5Audio) {

        if (!sm2.html5 || !sm2.html5.canPlayType) {
          sm2._wD('SoundManager: No HTML5 Audio() support detected.');
          sm2.hasHTML5 = false;
        }

        // <d>
        if (isBadSafari) {
          sm2._wD(smc + 'Note: Buggy HTML5 Audio in Safari on this OS X release, see https://bugs.webkit.org/show_bug.cgi?id=32159 - ' + (!hasFlash ? ' would use flash fallback for MP3/MP4, but none detected.' : 'will use flash fallback for MP3/MP4, if available'), 1);
        }
        // </d>

      }

    }

    if (sm2.useHTML5Audio && sm2.hasHTML5) {

      // sort out whether flash is optional, required or can be ignored.

      // innocent until proven guilty.
      canIgnoreFlash = true;

      for (item in formats) {
        
        if (formats.hasOwnProperty(item)) {
        
          if (formats[item].required) {
        
            if (!sm2.html5.canPlayType(formats[item].type)) {
        
              // 100% HTML5 mode is not possible.
              canIgnoreFlash = false;
              flashNeeded = true;
        
            } else if (sm2.preferFlash && (sm2.flash[item] || sm2.flash[formats[item].type])) {
        
              // flash may be required, or preferred for this format.
              flashNeeded = true;
        
            }
        
          }

        }

      }

    }

    // sanity check...
    if (sm2.ignoreFlash) {
      flashNeeded = false;
      canIgnoreFlash = true;
    }

    sm2.html5Only = (sm2.hasHTML5 && sm2.useHTML5Audio && !flashNeeded);

    return (!sm2.html5Only);

  };

  parseURL = function(url) {

    /**
     * Internal: Finds and returns the first playable URL (or failing that, the first URL.)
     * @param {string or array} url A single URL string, OR, an array of URL strings or {url:'/path/to/resource', type:'audio/mp3'} objects.
     */

    var i, j, urlResult = 0, result;

    if (url instanceof Array) {

      // find the first good one
      for (i = 0, j = url.length; i < j; i++) {

        if (url[i] instanceof Object) {

          // MIME check
          if (sm2.canPlayMIME(url[i].type)) {
            urlResult = i;
            break;
          }

        } else if (sm2.canPlayURL(url[i])) {

          // URL string check
          urlResult = i;
          break;

        }

      }

      // normalize to string
      if (url[urlResult].url) {
        url[urlResult] = url[urlResult].url;
      }

      result = url[urlResult];

    } else {

      // single URL case
      result = url;

    }

    return result;

  };


  startTimer = function(oSound) {

    /**
     * attach a timer to this sound, and start an interval if needed
     */

    if (!oSound._hasTimer) {

      oSound._hasTimer = true;

      if (!mobileHTML5 && sm2.html5PollingInterval) {

        if (h5IntervalTimer === null && h5TimerCount === 0) {

          h5IntervalTimer = setInterval(timerExecute, sm2.html5PollingInterval);

        }

        h5TimerCount++;

      }

    }

  };

  stopTimer = function(oSound) {

    /**
     * detach a timer
     */

    if (oSound._hasTimer) {

      oSound._hasTimer = false;

      if (!mobileHTML5 && sm2.html5PollingInterval) {

        // interval will stop itself at next execution.

        h5TimerCount--;

      }

    }

  };

  timerExecute = function() {

    /**
     * manual polling for HTML5 progress events, ie., whileplaying()
     * (can achieve greater precision than conservative default HTML5 interval)
     */

    var i;

    if (h5IntervalTimer !== null && !h5TimerCount) {

      // no active timers, stop polling interval.

      clearInterval(h5IntervalTimer);

      h5IntervalTimer = null;

      return false;

    }

    // check all HTML5 sounds with timers

    for (i = sm2.soundIDs.length - 1; i >= 0; i--) {

      if (sm2.sounds[sm2.soundIDs[i]].isHTML5 && sm2.sounds[sm2.soundIDs[i]]._hasTimer) {
        sm2.sounds[sm2.soundIDs[i]]._onTimer();
      }

    }

  };

  catchError = function(options) {

    options = (options !== _undefined ? options : {});

    if (typeof sm2.onerror === 'function') {
      sm2.onerror.apply(window, [{
        type: (options.type !== _undefined ? options.type : null)
      }]);
    }

    if (options.fatal !== _undefined && options.fatal) {
      sm2.disable();
    }

  };

  badSafariFix = function() {

    // special case: "bad" Safari (OS X 10.3 - 10.7) must fall back to flash for MP3/MP4
    if (!isBadSafari || !detectFlash()) {
      // doesn't apply
      return false;
    }

    var aF = sm2.audioFormats, i, item;

    for (item in aF) {

      if (aF.hasOwnProperty(item)) {

        if (item === 'mp3' || item === 'mp4') {

          sm2._wD(sm + ': Using flash fallback for ' + item + ' format');
          sm2.html5[item] = false;

          // assign result to related formats, too
          if (aF[item] && aF[item].related) {
            for (i = aF[item].related.length - 1; i >= 0; i--) {
              sm2.html5[aF[item].related[i]] = false;
            }
          }

        }

      }

    }

  };

  /**
   * Pseudo-private flash/ExternalInterface methods
   * ----------------------------------------------
   */

  this._setSandboxType = function(sandboxType) {

    // <d>
    // Security sandbox according to Flash plugin
    var sb = sm2.sandbox;

    sb.type = sandboxType;
    sb.description = sb.types[(sb.types[sandboxType] !== _undefined?sandboxType : 'unknown')];

    if (sb.type === 'localWithFile') {

      sb.noRemote = true;
      sb.noLocal = false;
      _wDS('secNote', 2);

    } else if (sb.type === 'localWithNetwork') {

      sb.noRemote = false;
      sb.noLocal = true;

    } else if (sb.type === 'localTrusted') {

      sb.noRemote = false;
      sb.noLocal = false;

    }
    // </d>

  };

  this._externalInterfaceOK = function(swfVersion) {

    // flash callback confirming flash loaded, EI working etc.
    // swfVersion: SWF build string

    if (sm2.swfLoaded) {
      return false;
    }

    var e;

    debugTS('swf', true);
    debugTS('flashtojs', true);
    sm2.swfLoaded = true;
    tryInitOnFocus = false;

    if (isBadSafari) {
      badSafariFix();
    }

    // complain if JS + SWF build/version strings don't match, excluding +DEV builds
    // <d>
    if (!swfVersion || swfVersion.replace(/\+dev/i,'') !== sm2.versionNumber.replace(/\+dev/i, '')) {

      e = sm + ': Fatal: JavaScript file build "' + sm2.versionNumber + '" does not match Flash SWF build "' + swfVersion + '" at ' + sm2.url + '. Ensure both are up-to-date.';

      // escape flash -> JS stack so this error fires in window.
      setTimeout(function versionMismatch() {
        throw new Error(e);
      }, 0);

      // exit, init will fail with timeout
      return false;

    }
    // </d>

    // IE needs a larger timeout
    setTimeout(init, isIE ? 100 : 1);

  };

  /**
   * Private initialization helpers
   * ------------------------------
   */

  createMovie = function(smID, smURL) {

    if (didAppend && appendSuccess) {
      // ignore if already succeeded
      return false;
    }

    function initMsg() {

      // <d>

      var options = [],
          title,
          msg = [],
          delimiter = ' + ';

      title = 'SoundManager ' + sm2.version + (!sm2.html5Only && sm2.useHTML5Audio ? (sm2.hasHTML5 ? ' + HTML5 audio' : ', no HTML5 audio support') : '');

      if (!sm2.html5Only) {

        if (sm2.preferFlash) {
          options.push('preferFlash');
        }

        if (sm2.useHighPerformance) {
          options.push('useHighPerformance');
        }

        if (sm2.flashPollingInterval) {
          options.push('flashPollingInterval (' + sm2.flashPollingInterval + 'ms)');
        }

        if (sm2.html5PollingInterval) {
          options.push('html5PollingInterval (' + sm2.html5PollingInterval + 'ms)');
        }

        if (sm2.wmode) {
          options.push('wmode (' + sm2.wmode + ')');
        }

        if (sm2.debugFlash) {
          options.push('debugFlash');
        }

        if (sm2.useFlashBlock) {
          options.push('flashBlock');
        }

      } else {

        if (sm2.html5PollingInterval) {
          options.push('html5PollingInterval (' + sm2.html5PollingInterval + 'ms)');
        }

      }

      if (options.length) {
        msg = msg.concat([options.join(delimiter)]);
      }

      sm2._wD(title + (msg.length ? delimiter + msg.join(', ') : ''), 1);

      showSupport();

      // </d>

    }

    if (sm2.html5Only) {

      // 100% HTML5 mode
      setVersionInfo();

      initMsg();
      sm2.oMC = id(sm2.movieID);
      init();

      // prevent multiple init attempts
      didAppend = true;

      appendSuccess = true;

      return false;

    }

    // flash path
    var remoteURL = (smURL || sm2.url),
    localURL = (sm2.altURL || remoteURL),
    swfTitle = 'JS/Flash audio component (SoundManager 2)',
    oTarget = getDocument(),
    extraClass = getSWFCSS(),
    isRTL = null,
    html = doc.getElementsByTagName('html')[0],
    oEmbed, oMovie, tmp, movieHTML, oEl, s, x, sClass;

    isRTL = (html && html.dir && html.dir.match(/rtl/i));
    smID = (smID === _undefined ? sm2.id : smID);

    function param(name, value) {
      return '<param name="' + name + '" value="' + value + '" />';
    }

    // safety check for legacy (change to Flash 9 URL)
    setVersionInfo();
    sm2.url = normalizeMovieURL(overHTTP ? remoteURL : localURL);
    smURL = sm2.url;

    sm2.wmode = (!sm2.wmode && sm2.useHighPerformance ? 'transparent' : sm2.wmode);

    if (sm2.wmode !== null && (ua.match(/msie 8/i) || (!isIE && !sm2.useHighPerformance)) && navigator.platform.match(/win32|win64/i)) {
      /**
       * extra-special case: movie doesn't load until scrolled into view when using wmode = anything but 'window' here
       * does not apply when using high performance (position:fixed means on-screen), OR infinite flash load timeout
       * wmode breaks IE 8 on Vista + Win7 too in some cases, as of January 2011 (?)
       */
      messages.push(strings.spcWmode);
      sm2.wmode = null;
    }

    oEmbed = {
      'name': smID,
      'id': smID,
      'src': smURL,
      'quality': 'high',
      'allowScriptAccess': sm2.allowScriptAccess,
      'bgcolor': sm2.bgColor,
      'pluginspage': http + 'www.macromedia.com/go/getflashplayer',
      'title': swfTitle,
      'type': 'application/x-shockwave-flash',
      'wmode': sm2.wmode,
      // http://help.adobe.com/en_US/as3/mobile/WS4bebcd66a74275c36cfb8137124318eebc6-7ffd.html
      'hasPriority': 'true'
    };

    if (sm2.debugFlash) {
      oEmbed.FlashVars = 'debug=1';
    }

    if (!sm2.wmode) {
      // don't write empty attribute
      delete oEmbed.wmode;
    }

    if (isIE) {

      // IE is "special".
      oMovie = doc.createElement('div');
      movieHTML = [
        '<object id="' + smID + '" data="' + smURL + '" type="' + oEmbed.type + '" title="' + oEmbed.title +'" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0">',
        param('movie', smURL),
        param('AllowScriptAccess', sm2.allowScriptAccess),
        param('quality', oEmbed.quality),
        (sm2.wmode? param('wmode', sm2.wmode): ''),
        param('bgcolor', sm2.bgColor),
        param('hasPriority', 'true'),
        (sm2.debugFlash ? param('FlashVars', oEmbed.FlashVars) : ''),
        '</object>'
      ].join('');

    } else {

      oMovie = doc.createElement('embed');
      for (tmp in oEmbed) {
        if (oEmbed.hasOwnProperty(tmp)) {
          oMovie.setAttribute(tmp, oEmbed[tmp]);
        }
      }

    }

    initDebug();
    extraClass = getSWFCSS();
    oTarget = getDocument();

    if (oTarget) {

      sm2.oMC = (id(sm2.movieID) || doc.createElement('div'));

      if (!sm2.oMC.id) {

        sm2.oMC.id = sm2.movieID;
        sm2.oMC.className = swfCSS.swfDefault + ' ' + extraClass;
        s = null;
        oEl = null;

        if (!sm2.useFlashBlock) {
          if (sm2.useHighPerformance) {
            // on-screen at all times
            s = {
              'position': 'fixed',
              'width': '8px',
              'height': '8px',
              // >= 6px for flash to run fast, >= 8px to start up under Firefox/win32 in some cases. odd? yes.
              'bottom': '0px',
              'left': '0px',
              'overflow': 'hidden'
            };
          } else {
            // hide off-screen, lower priority
            s = {
              'position': 'absolute',
              'width': '6px',
              'height': '6px',
              'top': '-9999px',
              'left': '-9999px'
            };
            if (isRTL) {
              s.left = Math.abs(parseInt(s.left, 10)) + 'px';
            }
          }
        }

        if (isWebkit) {
          // soundcloud-reported render/crash fix, safari 5
          sm2.oMC.style.zIndex = 10000;
        }

        if (!sm2.debugFlash) {
          for (x in s) {
            if (s.hasOwnProperty(x)) {
              sm2.oMC.style[x] = s[x];
            }
          }
        }

        try {

          if (!isIE) {
            sm2.oMC.appendChild(oMovie);
          }

          oTarget.appendChild(sm2.oMC);

          if (isIE) {
            oEl = sm2.oMC.appendChild(doc.createElement('div'));
            oEl.className = swfCSS.swfBox;
            oEl.innerHTML = movieHTML;
          }

          appendSuccess = true;

        } catch(e) {

          throw new Error(str('domError') + ' \n' + e.toString());

        }

      } else {

        // SM2 container is already in the document (eg. flashblock use case)
        sClass = sm2.oMC.className;
        sm2.oMC.className = (sClass ? sClass + ' ' : swfCSS.swfDefault) + (extraClass ? ' ' + extraClass : '');
        sm2.oMC.appendChild(oMovie);

        if (isIE) {
          oEl = sm2.oMC.appendChild(doc.createElement('div'));
          oEl.className = swfCSS.swfBox;
          oEl.innerHTML = movieHTML;
        }

        appendSuccess = true;

      }

    }

    didAppend = true;

    initMsg();

    // sm2._wD(sm + ': Trying to load ' + smURL + (!overHTTP && sm2.altURL ? ' (alternate URL)' : ''), 1);

    return true;

  };

  initMovie = function() {

    if (sm2.html5Only) {
      createMovie();
      return false;
    }

    // attempt to get, or create, movie (may already exist)
    if (flash) {
      return false;
    }

    if (!sm2.url) {

      /**
       * Something isn't right - we've reached init, but the soundManager url property has not been set.
       * User has not called setup({url: ...}), or has not set soundManager.url (legacy use case) directly before init time.
       * Notify and exit. If user calls setup() with a url: property, init will be restarted as in the deferred loading case.
       */

       _wDS('noURL');
       return false;

    }

    // inline markup case
    flash = sm2.getMovie(sm2.id);

    if (!flash) {

      if (!oRemoved) {

        // try to create
        createMovie(sm2.id, sm2.url);

      } else {

        // try to re-append removed movie after reboot()
        if (!isIE) {
          sm2.oMC.appendChild(oRemoved);
        } else {
          sm2.oMC.innerHTML = oRemovedHTML;
        }

        oRemoved = null;
        didAppend = true;

      }

      flash = sm2.getMovie(sm2.id);

    }

    if (typeof sm2.oninitmovie === 'function') {
      setTimeout(sm2.oninitmovie, 1);
    }

    // <d>
    flushMessages();
    // </d>

    return true;

  };

  delayWaitForEI = function() {

    setTimeout(waitForEI, 1000);

  };

  rebootIntoHTML5 = function() {

    // special case: try for a reboot with preferFlash: false, if 100% HTML5 mode is possible and useFlashBlock is not enabled.

    window.setTimeout(function() {

      complain(smc + 'useFlashBlock is false, 100% HTML5 mode is possible. Rebooting with preferFlash: false...');

      sm2.setup({
        preferFlash: false
      }).reboot();

      // if for some reason you want to detect this case, use an ontimeout() callback and look for html5Only and didFlashBlock == true.
      sm2.didFlashBlock = true;

      sm2.beginDelayedInit();

    }, 1);

  };

  waitForEI = function() {

    var p,
        loadIncomplete = false;

    if (!sm2.url) {
      // No SWF url to load (noURL case) - exit for now. Will be retried when url is set.
      return false;
    }

    if (waitingForEI) {
      return false;
    }

    waitingForEI = true;
    event.remove(window, 'load', delayWaitForEI);

    if (hasFlash && tryInitOnFocus && !isFocused) {
      // Safari won't load flash in background tabs, only when focused.
      _wDS('waitFocus');
      return false;
    }

    if (!didInit) {
      p = sm2.getMoviePercent();
      if (p > 0 && p < 100) {
        loadIncomplete = true;
      }
    }

    setTimeout(function() {

      p = sm2.getMoviePercent();

      if (loadIncomplete) {
        // special case: if movie *partially* loaded, retry until it's 100% before assuming failure.
        waitingForEI = false;
        sm2._wD(str('waitSWF'));
        window.setTimeout(delayWaitForEI, 1);
        return false;
      }

      // <d>
      if (!didInit) {

        sm2._wD(sm + ': No Flash response within expected time. Likely causes: ' + (p === 0 ? 'SWF load failed, ' : '') + 'Flash blocked or JS-Flash security error.' + (sm2.debugFlash ? ' ' + str('checkSWF') : ''), 2);

        if (!overHTTP && p) {

          _wDS('localFail', 2);

          if (!sm2.debugFlash) {
            _wDS('tryDebug', 2);
          }

        }

        if (p === 0) {

          // if 0 (not null), probably a 404.
          sm2._wD(str('swf404', sm2.url), 1);

        }

        debugTS('flashtojs', false, ': Timed out' + (overHTTP ? ' (Check flash security or flash blockers)':' (No plugin/missing SWF?)'));

      }
      // </d>

      // give up / time-out, depending

      if (!didInit && okToDisable) {

        if (p === null) {

          // SWF failed to report load progress. Possibly blocked.

          if (sm2.useFlashBlock || sm2.flashLoadTimeout === 0) {

            if (sm2.useFlashBlock) {

              flashBlockHandler();

            }

            _wDS('waitForever');

          } else {

            // no custom flash block handling, but SWF has timed out. Will recover if user unblocks / allows SWF load.

            if (!sm2.useFlashBlock && canIgnoreFlash) {

              rebootIntoHTML5();

            } else {

              _wDS('waitForever');

              // fire any regular registered ontimeout() listeners.
              processOnEvents({
                type: 'ontimeout',
                ignoreInit: true,
                error: {
                  type: 'INIT_FLASHBLOCK'
                }
              });

            }

          }

        } else {

          // SWF loaded? Shouldn't be a blocking issue, then.

          if (sm2.flashLoadTimeout === 0) {

            _wDS('waitForever');

          } else {

            if (!sm2.useFlashBlock && canIgnoreFlash) {

              rebootIntoHTML5();

            } else {

              failSafely(true);

            }

          }

        }

      }

    }, sm2.flashLoadTimeout);

  };

  handleFocus = function() {

    function cleanup() {
      event.remove(window, 'focus', handleFocus);
    }

    if (isFocused || !tryInitOnFocus) {
      // already focused, or not special Safari background tab case
      cleanup();
      return true;
    }

    okToDisable = true;
    isFocused = true;
    _wDS('gotFocus');

    // allow init to restart
    waitingForEI = false;

    // kick off ExternalInterface timeout, now that the SWF has started
    delayWaitForEI();

    cleanup();
    return true;

  };

  flushMessages = function() {

    // <d>

    // SM2 pre-init debug messages
    if (messages.length) {
      sm2._wD('SoundManager 2: ' + messages.join(' '), 1);
      messages = [];
    }

    // </d>

  };

  showSupport = function() {

    // <d>

    flushMessages();

    var item, tests = [];

    if (sm2.useHTML5Audio && sm2.hasHTML5) {
      for (item in sm2.audioFormats) {
        if (sm2.audioFormats.hasOwnProperty(item)) {
          tests.push(item + ' = ' + sm2.html5[item] + (!sm2.html5[item] && needsFlash && sm2.flash[item] ? ' (using flash)' : (sm2.preferFlash && sm2.flash[item] && needsFlash ? ' (preferring flash)' : (!sm2.html5[item] ? ' (' + (sm2.audioFormats[item].required ? 'required, ' : '') + 'and no flash support)' : ''))));
        }
      }
      sm2._wD('SoundManager 2 HTML5 support: ' + tests.join(', '), 1);
    }

    // </d>

  };

  initComplete = function(bNoDisable) {

    if (didInit) {
      return false;
    }

    if (sm2.html5Only) {
      // all good.
      _wDS('sm2Loaded', 1);
      didInit = true;
      initUserOnload();
      debugTS('onload', true);
      return true;
    }

    var wasTimeout = (sm2.useFlashBlock && sm2.flashLoadTimeout && !sm2.getMoviePercent()),
        result = true,
        error;

    if (!wasTimeout) {
      didInit = true;
    }

    error = {
      type: (!hasFlash && needsFlash ? 'NO_FLASH' : 'INIT_TIMEOUT')
    };

    sm2._wD('SoundManager 2 ' + (disabled ? 'failed to load' : 'loaded') + ' (' + (disabled ? 'Flash security/load error' : 'OK') + ') ' + String.fromCharCode(disabled ? 10006 : 10003), disabled ? 2: 1);

    if (disabled || bNoDisable) {

      if (sm2.useFlashBlock && sm2.oMC) {
        sm2.oMC.className = getSWFCSS() + ' ' + (sm2.getMoviePercent() === null ? swfCSS.swfTimedout : swfCSS.swfError);
      }

      processOnEvents({
        type: 'ontimeout',
        error: error,
        ignoreInit: true
      });

      debugTS('onload', false);
      catchError(error);

      result = false;

    } else {

      debugTS('onload', true);

    }

    if (!disabled) {

      if (sm2.waitForWindowLoad && !windowLoaded) {

        _wDS('waitOnload');
        event.add(window, 'load', initUserOnload);

      } else {

        // <d>
        if (sm2.waitForWindowLoad && windowLoaded) {
          _wDS('docLoaded');
        }
        // </d>

        initUserOnload();

      }

    }

    return result;

  };

  /**
   * apply top-level setupOptions object as local properties, eg., this.setupOptions.flashVersion -> this.flashVersion (soundManager.flashVersion)
   * this maintains backward compatibility, and allows properties to be defined separately for use by soundManager.setup().
   */

  setProperties = function() {

    var i,
        o = sm2.setupOptions;

    for (i in o) {

      if (o.hasOwnProperty(i)) {

        // assign local property if not already defined

        if (sm2[i] === _undefined) {

          sm2[i] = o[i];

        } else if (sm2[i] !== o[i]) {

          // legacy support: write manually-assigned property (eg., soundManager.url) back to setupOptions to keep things in sync
          sm2.setupOptions[i] = sm2[i];

        }

      }

    }

  };


  init = function() {

    // called after onload()

    if (didInit) {
      _wDS('didInit');
      return false;
    }

    function cleanup() {
      event.remove(window, 'load', sm2.beginDelayedInit);
    }

    if (sm2.html5Only) {

      if (!didInit) {
        // we don't need no steenking flash!
        cleanup();
        sm2.enabled = true;
        initComplete();
      }

      return true;

    }

    // flash path
    initMovie();

    try {

      // attempt to talk to Flash
      flash._externalInterfaceTest(false);

      /**
       * Apply user-specified polling interval, OR, if "high performance" set, faster vs. default polling
       * (determines frequency of whileloading/whileplaying callbacks, effectively driving UI framerates)
       */
      setPolling(true, (sm2.flashPollingInterval || (sm2.useHighPerformance ? 10 : 50)));

      if (!sm2.debugMode) {
        // stop the SWF from making debug output calls to JS
        flash._disableDebug();
      }

      sm2.enabled = true;
      debugTS('jstoflash', true);

      if (!sm2.html5Only) {
        // prevent browser from showing cached page state (or rather, restoring "suspended" page state) via back button, because flash may be dead
        // http://www.webkit.org/blog/516/webkit-page-cache-ii-the-unload-event/
        event.add(window, 'unload', doNothing);
      }

    } catch(e) {

      sm2._wD('js/flash exception: ' + e.toString());

      debugTS('jstoflash', false);

      catchError({
        type: 'JS_TO_FLASH_EXCEPTION',
        fatal: true
      });

      // don't disable, for reboot()
      failSafely(true);

      initComplete();

      return false;

    }

    initComplete();

    // disconnect events
    cleanup();

    return true;

  };

  domContentLoaded = function() {

    if (didDCLoaded) {
      return false;
    }

    didDCLoaded = true;

    // assign top-level soundManager properties eg. soundManager.url
    setProperties();

    initDebug();

    if (!hasFlash && sm2.hasHTML5) {

      sm2._wD('SoundManager 2: No Flash detected' + (!sm2.useHTML5Audio ? ', enabling HTML5.' : '. Trying HTML5-only mode.'), 1);

      sm2.setup({
        'useHTML5Audio': true,
        // make sure we aren't preferring flash, either
        // TODO: preferFlash should not matter if flash is not installed. Currently, stuff breaks without the below tweak.
        'preferFlash': false
      });

    }

    testHTML5();

    if (!hasFlash && needsFlash) {

      messages.push(strings.needFlash);

      // TODO: Fatal here vs. timeout approach, etc.
      // hack: fail sooner.
      sm2.setup({
        'flashLoadTimeout': 1
      });

    }

    if (doc.removeEventListener) {
      doc.removeEventListener('DOMContentLoaded', domContentLoaded, false);
    }

    initMovie();

    return true;

  };

  domContentLoadedIE = function() {

    if (doc.readyState === 'complete') {
      domContentLoaded();
      doc.detachEvent('onreadystatechange', domContentLoadedIE);
    }

    return true;

  };

  winOnLoad = function() {

    // catch edge case of initComplete() firing after window.load()
    windowLoaded = true;

    // catch case where DOMContentLoaded has been sent, but we're still in doc.readyState = 'interactive'
    domContentLoaded();

    event.remove(window, 'load', winOnLoad);

  };

  // sniff up-front
  detectFlash();

  // focus and window load, init (primarily flash-driven)
  event.add(window, 'focus', handleFocus);
  event.add(window, 'load', delayWaitForEI);
  event.add(window, 'load', winOnLoad);

  if (doc.addEventListener) {

    doc.addEventListener('DOMContentLoaded', domContentLoaded, false);

  } else if (doc.attachEvent) {

    doc.attachEvent('onreadystatechange', domContentLoadedIE);

  } else {

    // no add/attachevent support - safe to assume no JS -> Flash either
    debugTS('onload', false);
    catchError({
      type: 'NO_DOM2_EVENTS',
      fatal: true
    });

  }

} // SoundManager()

// SM2_DEFER details: http://www.schillmania.com/projects/soundmanager2/doc/getstarted/#lazy-loading

if (window.SM2_DEFER === _undefined || !SM2_DEFER) {
  soundManager = new SoundManager();
}

/**
 * SoundManager public interfaces
 * ------------------------------
 */

if (typeof module === 'object' && module && typeof module.exports === 'object') {

  /**
   * commonJS module
   */

  module.exports.SoundManager = SoundManager;
  module.exports.soundManager = soundManager;

} else if (typeof define === 'function' && define.amd) {

  /**
   * AMD - requireJS
   * basic usage:
   * require(["/path/to/soundmanager2.js"], function(SoundManager) {
   *   SoundManager.getInstance().setup({
   *     url: '/swf/',
   *     onready: function() { ... }
   *   })
   * });
   *
   * SM2_DEFER usage:
   * window.SM2_DEFER = true;
   * require(["/path/to/soundmanager2.js"], function(SoundManager) {
   *   SoundManager.getInstance(function() {
   *     var soundManager = new SoundManager.constructor();
   *     soundManager.setup({
   *       url: '/swf/',
   *       ...
   *     });
   *     ...
   *     soundManager.beginDelayedInit();
   *     return soundManager;
   *   })
   * }); 
   */

  define(function() {
    /**
     * Retrieve the global instance of SoundManager.
     * If a global instance does not exist it can be created using a callback.
     *
     * @param {Function} smBuilder Optional: Callback used to create a new SoundManager instance
     * @return {SoundManager} The global SoundManager instance
     */
    function getInstance(smBuilder) {
      if (!window.soundManager && smBuilder instanceof Function) {
        var instance = smBuilder(SoundManager);
        if (instance instanceof SoundManager) {
          window.soundManager = instance;
        }
      }
      return window.soundManager;
    }
    return {
      constructor: SoundManager,
      getInstance: getInstance
    }
  });

}

// standard browser case

// constructor
window.SoundManager = SoundManager;

/**
 * note: SM2 requires a window global due to Flash, which makes calls to window.soundManager.
 * Flash may not always be needed, but this is not known until async init and SM2 may even "reboot" into Flash mode.
 */

// public API, flash callbacks etc.
window.soundManager = soundManager;

}(window));
