| sfa | Sonic Foundry Audio File |
| sfark | sfArk Compressed SoundFont |
| sfd | SoundStage Sound File Data |
| sfi | SoundStage Sound File Info |
| sfk | Sound Forge Peak Data |
| sfl | Sound Forge Audio Data |
| sfpack | SFPack Compressed SoundFont |
| sfr | Sonic Foundry Sample Resource |
| sg2 | Band-in-a-Box Song |
| sg4 | Band-in-a-Box Song |
| sga | Self-Guard Security Camera Audio |
| sgu | Band-in-a-Box Song |
| sgw | n-Track Packed Song |
| shn | Shorten Compressed Audio |
| sid | Commodore 64 Music |
| sj_ | SuperJAM Compressed Audio |
| sky | SKYT Packer Module |
| skyt | SKYT Packer Module |
| sma | SmartMusic Accompaniment |
| smaf | SMAF Audio |
| smf0 | Standard Midifile Type 0 |
| smf1 | Standard Midifile Type 1 |
| smp | SampleVision Audio Sample |
| snc | Sonarc Compressed Audio |
| snd | Macintosh Sound Resource |
| snd | SndTool Audio File |
| snda | Aleph One Sound File |
| sndh | Atari ST Audio Data |
| sndr | Sounder Audio Data |
| sndt | SndTool Audio File |
