| caf | Core Audio Format |
| caff | Core Audio Format |
| cda | CD Audio Track |
| cdda | CD Audio Track |
| cdg | CD+G Karaoke File |
| cdlx | Audition CD Layout |
| cel | Adobe Audition Loop |
| celt | FMOD CELT Compressed Audio |
| cfa | Adobe Premiere Conformed Audio |
| cff | BoomTracker 4.0 Song |
| cfxr | Cocoa Sfxr |
| ckb | Cricket Audio Bank File |
| ckf | Casio WK-3000 Keyboard File |
| cks | Cricket Audio Stream |
| cmf | Creative Labs Music File |
| conform | Conformalizer Change List |
| copy | Sony Ericsson Protected Content |
| csw | Compressed Square Wave |
| cvs | DR-97 Digital Recorder Audio |
| cvs | Continuously Variable Slope Delta Modulation Audio |
| cvsd | Continuously Variable Slope Delta Modulation Audio |
| cvu | CVSD Unfiltered Audio |
| d00 | OPL2 FM Audio |
| d01 | OPL2 FM Audio |
| dab | Digital Audio Broadcasting File |
| daw | Cubase Recording |
| dewf | SoundEdit Recorded Instrument |
| df2 | Defractor 2 Instrument |
| dfc | Defractor Instrument |
| dh | David Hanney Music |
