| rad | Reality AdLib Tracker Song |
| ram | Real Audio Sound |
| rap | Magix Music Studio Rap Data |
| rax | Real Audio Sound |
| rbs | Rebirth Song Data |
| rc2 | ReCycle Audio Loop Data |
| rcd | KaiOS Audio Data |
| rcp | Recomposer MIDI Sequence |
| rcwv | PMRecorder Recorded Audio |
| rdl | RadioDestiny Radio Stream |
| record | DaveTech GarageBand Records Audio |
| rel | Nokia 5510 Phone Recorded Audio |
| rex | ReCycle Loop Data |
| rex2 | ReCycle REX 2 Audio |
| rf64 | RF64 Audio Data |
| rfl | Reason ReFill Sound Bank |
| rg | Rosegarden Music |
| rgtrack | RealStrat Music Track |
| rh | RobHubbard 2 Audio Data |
| rhl | EdgeSounds RatHole Compressed Audi |
| rhz | RHZ Ringtone |
| rif | Rockwell ADPCM Format Data |
| ring | Grandstream IP Phone Ringtone |
| rix | Softstar RIX OPL Music Format Audio |
| rjp | Vectordean Music |
| rka | RK Audio Lossless Compressed Audio |
| rmi | MIDI Music |
| rmid | RIFF Based Midi Format Data |
| rmj | RealJukebox Unsecure Media Clip |
| rmx | RealJukebox Secure Media Clip |
