| mtm | MultiTracker Music Module |
| mtp | MadTracker Pattern |
| mts | MadTracker Sample |
| mts | Music Time Pro Music |
| mtx | MadTracker 2 Extension |
| mu3 | Myriad Packed Musical Score |
| mui | Myriad Melody Assistant User Instrument Data |
| muk | Multak Mini 8162 Encoded Audio |
| mus | Finale Music File |
| mus | Sony PlayStation 2 Music Data |
| musa | Aleph One Music File |
| musicxml | MusicXML Notation |
| mux | Myriad Melody Assistant Stand-Alone Music Score |
| mv3 | AUPEC Encoded Audio |
| mws | IBM MWave DSP Synth Instrument Extract |
| mww | MusicWorks Data |
| mx3 | Bitbop Tuner Locked Audio Data |
| mxb | Max Patcher Binary Data |
| mxl | Compressed MusicXML Notation |
| mxmf | Mobile XMF Audio |
| mxsnd | NI Maschine Sound Data |
| mxt | Max Patcher Text Data |
| mxtx | MaxTrax Music |
| myr | Myriad Melody Assistant Music Score |
| mzp | Mozart Percussion |
| n3a | Panasonic Security Camera Recorded Audio |
| nabs | Native Instruments Absynth 5 Patch |
| nap | Napster Secured Audio |
| narrative | Mariner Narrator Audio |
| nbs | Minecraft Note Block Studio Song |
| ncmm | NI Maschine Mikro Template |
| ncsflib | Nitro Composer Sound Format LIB |
| ncw | Native Instruments Kontakt Compressed Wave |
| nfd_audio | Nero Multimedia Suite Audio Data |
| nfm8 | Native Instruments KOMPLETE FM8 Sound Data |
| nicnt | Native Instruments Kontakt v5 Library |
| nist | HTK NIST SPHERE Data |
| nkb | Native Instruments Kontakt Audio Bank |
| nkc | Kontakt Library Data |
| nki | Native Instruments Kontakt Library |
| nkm | Native Instruments Kontakt Multi Library |
| nkr | Kontakt Resource Container |
| nks | Native Instruments Kontakt Monolith Container |
| nkx | Kontakt Monolith Container |
| nmf | NICE Media Player Audio |
| nmsv | New Massive Sound |
| noktxt | Nokia Phone Text Ringtone |
| npk | n-Track Waveform Peak |
| npno | Nord Piano Module |
| ns2p | Nord Stage 2 Program |
| nsa | Nullsoft Streaming Audio |
| nsf | NES Audio Data |
| nsfe | Nintendo NES Audio with Enhanced Tags |
| nsla | Nero Video Audio Data |
| nsp | KayPentax CSL Audio |
| nst | Noise Tracker Music Module |
| ntn | NOTION Song |
| ntp | NovoTrade Packer Music |
| nus3audio | Super Smash Bros NUS3 Audio Data |
| nus3bank | Super Smash Bros Nus3bank Audio Archive |
| nvf | Creative Labs NOMAD II Audio |
| nwc | NoteWorthy Composer Music |
| nwctxt | NoteWorthy Composer Text |
| nwp | NoteWorthy Player Music |
| nw_ | Compressed NoteWorthy Composer Music |
| nxt | NeXTSTEP Sound File |
| o01 | Typhoon OS Voice Data |
| obw | Superior Drummer Sound File |
| obw | Toontrack Superior Drummer Audio |
| ocdf | OneClickDigital Audio Book |
| odd | Coby Voice Recorder Data |
| odm | OverDrive Media Data |
| ofg | OptimFROG Lossless Audio |
| ofr | OptimFROG Lossless Audio |
| ofs | OptimFROG Dualstream Audio |
| ogg | Ogg Vorbis Compressed Audio |
| oggstr | Godot Engine OGG Audio Data |
| okt | Oktalyzer Music Module |
| olv | OnLive! Traveler Sound |
| omg | Sony OpenMG Audio |
| oml | OtsAV Media Library |
| omx | OtsAV Media Library Information |
| opm | FM Operator Type-M Voice Data |
| opus | Opus Audio File |
| orc | CSound Orchestra Midi Audio |
| orc | TRS-80 Orchestra-90 Audio Data |
| orc | Voyetra Digital Orchestrator Pro Song |
| org | Organya Music Data |
| org | Sound Blaster Pro Organ Audio |
| organ | GrandOrgue Organ Sample Set |
| osb | Sega Dreamcast OSB Audio Data |
| osp | Orion Sampler Program |
| ots | OtsAV Album |
| ots | OtsJuke Audio |
| out | Atari Jaguar Parsed MIDI Audio |
| p | AKAI S900 Program |
| p00 | Roland V-Synth Patch Data |
| p3k | Kurzweil PC3K8 Audio Data |
| p40 | The Player 4.0 Music Module |
| p41 | The Player 4.1 Music Module |
| p4x | The Player 4.x Music |
| p50 | The Player 5.0a Module |
| p5b | NI Pro-53 Bank |
| p60 | The Player 6.0 Music Module |
| p61 | The Player 6.1a Music Module |
| paal | Cakewalk Pyro Audio Creator Audio Layout |
| pac | LPAC Compressed Audio |
| pac | SBStudio II Song Package |
| paf | Ensoniq PARIS Audio Data |
| pat | Gravis UltraSound GF1 Patch Data |
| pat | Notator SL Pattern |
| pbf | Turtle Beach Pinnacle Bank Data |
| pca | Sony Perfect Clarity Audio |
| pcg | Korg Trinity Instrument Bank |
| pch2 | Nord Modular G2 Patch |
| pcm | RAW PCM Audio Data |
| pdx | Sharp X68000 PCM Data |
| pgm | Akai MPC2500 Program |
| ph | ZOOM MRS-802 Phrase Audio Data |
| phr | ZOOM MRS-802 Stereo Right Channel Data |
| pk7 | Casio WK-6500 PK7 Package |
| plm | DisorderTracker2 Music Modules |
| plm | Panasonic SD Voice Editing File |
| pls | DisorderTracker2 Sample Data |
| plst | SmartMusic Playlist |
| pna | PhatNoise Audio |
| pno | Microsoft Windows 8 Piano Song |
| ppc | Adobe Presenter Audio |
| ppc | Percussion Studio Compiled Rhythmic Pattern |
| ppf | Turtle Beach Pinnacle Program |
| prg | WAVmaker Program |
| prlglib | Korg Prologue Sound Bank Data |
| prlgunit | Korg Prologue Unit |
| prorunner | Prorunner Format Music |
| provbank | Prophet V Audio Bank |
| pru2 | Prorunner 2.0 Music |
| ps16 | Protracker Studio Module 16 |
| psb | Turtle Beach Pinnacle Sound Bank |
| psf2 | PlayStation 2 Sound Format Audio |
| psflib | Portable Sound Format Library |
| psg | ZX Spectrum 128 Audio |
| psi | Psion A-law Audio |
| psid | Commodore 64 Tunes and Sound Effects Data |
| psion | Psion A-law Sound Data |
| psm | Protracker Studio Module |
| psy | Psycle Song |
| pt3 | Pro Tracker 3 Compilation |
| ptc | MultitrackStudio Patch Data |
| ptm | PolyTracker Music Module |
| ptnoise | PxTone PtNoise Audio File |
| ptt | Viber Audio Push-to-talk Data |
| pttune | PxTone Audio File |
| ptvoice | PxTone PtVoice Audio File |
| puma | Pumatracker Music |
| pvf | Mgetty Portable Voice Format Audio |
| px0 | Production Studio Patch Data |
| px1 | Production Studio Melody Sequence Data |
| pya | Microsoft PlayReady Audio |
| q1a | QSI Q1A Sound |
| qc-emod | QuadraComposer Music Module |
| qcp | QCELP Compressed Audio |
| qdx | QDesign Audio |
| qmc3 | QQ Music Encrypted MP3 Audio |
| qsd | QuickScore Elite Music Score |
| qsf | Capcom QSound Audio Data |
| r | Sound Designer 2 Right Channel Data |
| r1m | RealOne Streaming Media Metadata |
| r2a | Yamaha RS-7000 Archive |
| r2p | Yamaha RS-7000 Pattern |
| r2s | Yamaha RS-7000 Song |
| r3a | Yamaha RS-7000 Sample |
| ra | Real Audio Sound |
| rad | Reality AdLib Tracker Song |
| rap | Magix Music Studio Rap Data |
| 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 |
| 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 |
| rmf | Rich Music Format Audio File |
| rmid | RIFF Based Midi Format Data |
| rmj | RealJukebox Unsecure Media Clip |
| rmt | RASTER Music Tracker Song |
| rmx | RealJukebox Secure Media Clip |
| rng | Nokia Phone Ringtone |
| rns | Reason Audio |
| rns | Renoise Song Data |
| rol | AdLib Visual Composer Music |
| rso | Lego Mindstorms NXT Brick Audio |
| rti | RASTER Music Tracker Instrument |
| rti | Real Tracker Instrument |
| rtm | Real Tracker Module |
| rtpl | Nokia Phone Binary Ringtone |
| rts | Real Tracker Sample |
| rtttl | Ring Tones Text Transfer Language File |
| rtx | Nokia Phone Ringtone |
| rwr | RiffWorks Riff Data |
| rwsd | RWSD Audio Stream |
| rx2 | ReCycle REX 2 Audio |
| s | Akai S900 Sample |
| s | Pulsar Audio Data |
| s1a | Yamaha EX5 All Data |
| s1m | Yamaha EX5 Waveform Data |
| s1v | Yamaha EX5 Voice Data |
| s24 | Seq24 Pattern Data |
| s2b | Yamaha Custom RAM Voice Data |
| s3i | Scream Tracker 3 Instrument |
| s3m | Scream Tracker 3 Module |
| s48 | Jutel RadioMan MPEG2 Audio |
| s98 | NEC PC-98 Audio Data |
| sa2 | Surprise! AdLib Tracker v2 Song |
| sa2b | A2B Player Stream |
| sab | ALSong Album |
| saf | MusicMatch Jukebox Secure Audio File |
| sag | Sagem Phone Ringtone Data |
| samp | Nintendo Wii ADPCM Sample |
| sample | Godot Engine Audio Sample Data |
| sap | Atari SAP Music |
| sat | Surprise! AdLib Tracker v1 Song |
| sb | Signed Byte Audio Data |
| sbi | Creative Labs Sound Blaster Instruments |
| sbk | EMU SoundFont v1.x Banks |
| sbnk | Nintendo DS Sound Bank Data |
| sbw | ScadaWorks Voice Wave Data |
| sb_ | Compressed Creative Labs Sound Blaster Instruments |
| sc | SoundControl Audio |
| sc2 | Sample Cell II Instrument Data |
| sc68 | SC68 Music |
| sci | Sierra AdLib Audio Data |
| scm | Spanish Whiz Scrambled Game Sound |
| sco | CSound Score Data |
| scs11 | Show Cue System Cue |
| sd | Sound Designer Audio |
| sd2f | Sound Designer 2 Sound |