| brstm | BRSTM Audio Stream |
| bse | Bedevilled Sound Engine File |
| bun | Cakewalk Bundle Data |
| bwf | Broadcast Wave Format Audio |
| bwg | BrainWave Generator Preset |
| 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 |
| cel | Adobe Audition Loop |
| 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 |
| cmf | Creative Labs Music File |
| cop | Sam Coupe Audio 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 |
| d50 | Roland D-50 Patch |
| dab | Digital Audio Broadcasting File |
| dabp | Opendigitalradio DABPlus Encoded Audio |
| dashsnd | Wusikstation Instrument Data |
| daw | Cubase Recording |
| dcm | DCM Music Module |
| dewf | SoundEdit Recorded Instrument |