| bww | Bagpipe Music Score |
| c01 | Typhoon OS Voice Data |
| caf | Core Audio Format |
| caff | Core Audio Format |
| cda | CD Audio Track |
| cdda | CD Audio Track |
| cdg | CD+G Karaoke File |
| cdz | Cadenzo Music Data |
| cel | Adobe Audition Loop |
| cel | NI Battery Drum Cell Data |
| celp | CELP Compressed Audio |
| celt | FMOD CELT Compressed Audio |
| cfa | Adobe Premiere Conformed Audio |
| cff | BoomTracker 4.0 Song |
| cfxr | Cocoa Sfxr Audio Data |
| ckb | Cricket Audio Bank File |
| ckf | Casio WK-3000 Keyboard File |
| cks | Cricket Audio Stream |
| cl3 | NI Battery Audio Data |
| cmf | Creative Labs Music File |
| cmf | SoundFX Macs Opera Tracker Music |
| cmo | Spanish Whiz Audio Data |
| cop | Sam Coupe Audio Data |
| cpa | Adobe Premiere Pro Conformed Audio |
| crd | Spanish Whiz Card Game Sound |
| csd | CSound Unified Format Audio |
| cseq | Nintendo 3DS Audio Sequence Data |
| csw | Compressed Square Wave |
| cvh | DR-97 Digital Recorder HQ Voice |
| cvs | Continuously Variable Slope Delta Modulation Audio |
| cvs | DR-97 Digital Recorder SP Audio |
| cvsd | Continuously Variable Slope Delta Modulation Audio |
| cvu | CVSD Unfiltered Audio |
| d | SPPack Audio Data |
| d00 | OPL2 FM Audio |
