| Class | Description | |
|---|---|---|
| Seion | Global sound control over whole of SeiON. | |
| SeionClip | The simplest way to play a sound. | |
| SeionGroup | In charge of organising SeionClips, their playback and properties. | |
| SeionSample | An ISeionInstance that plays gap-less looping MP3 sounds via specifying sample range. |