Audio File Types
The Audio Files category includes compressed and uncompressed audio formats, which contain waveform data that can be played with audio playback software. This category also includes MIDI files, musical scores, and audio project files, which typically do not contain audio data.
Common audio file extensions include .WAV, .AIF, .MP3, and .MID.
| Extension | File Description | Popularity |
|---|---|---|
| .4mp | 4-MP3 Database File | Average |
| .669 | UNIS Composer 669 Module | Uncommon |
| .6cm | Six Channel Module | Rare |
| .8cm | Eight Channel Module | Rare |
| .8med | Amiga OctaMed Music File | Rare |
| .8svx | Amiga 8-Bit Sound File | Average |
| .a2m | AdLib Tracker 2 File | Average |
| .a52 | Dolby Digital Audio File | Rare |
| .aa | Audible Audio Book File | Common |
| .aa3 | ATRAC Audio File | Common |
| .aac | Advanced Audio Coding File | Uncommon |
| .aax | Audible Enhanced Audiobook File | Average |
| .ab | Ambling BookPlayer MP3 File | Uncommon |
| .abc | ABC Music Notation | Average |
| .abm | Music Album | Average |
| .ac3 | Audio Codec 3 File | Average |
| .acd | ACID Project File | Common |
| .acd-bak | Sony ACID Project Backup File | Average |
| .acd-zip | Sony ACID Project With Embedded Media File | Common |
| .acm | Interplay Audio File | Common |
| .acp | aacPlus Audio File | Uncommon |
| .act | ADPCM Compressed Audio File | Average |
| .adg | Ableton Device Group | Average |
| .adt | ADTS Audio File | Average |
| .adts | Audio Data Transport Stream File | Average |
| .adv | Ableton Device Preset File | Average |
| .afc | Mass Effect 2 Audio File | Common |
| .agm | DTS Multi-channel Pro Packer File | Average |
| .ahx | WinAHX Tracker Module | Uncommon |
| .aif | Audio Interchange File Format | Very Common |
| .aifc | Compressed Audio Interchange File | Average |
| .aiff | Audio Interchange File Format | Average |
| .ais | Velvet Studio Instrument | Uncommon |
| .akp | Akai Sampler File | Average |
| .al | A-Law Compressed Sound Format | Rare |
| .alac | ALAC Encoded Audio File | Rare |
| .alaw | A-Law Compressed Sound Format | Uncommon |
| .alc | Ableton Live Clip File | Average |
| .all | Cubasis Project File | Uncommon |
| .als | Ableton Live Set File | Common |
| .amf | Advanced Module File | Average |
| .amr | Adaptive Multi-Rate Codec File | Common |
| .ams | Extreme Tracker Module | Average |
| .ams | Velvet Studio Module | Average |
| .amxd | Ableton Max Patch File | Common |
| .aob | DVD-Audio Audio Object File | Average |
| .ape | Monkey's Audio Lossless Audio File | Common |
| .apf | Sony Ericsson Firmware Acoustics File | Uncommon |
| .apl | Monkey's Audio Track Information File | Uncommon |
| .aria | Chipsounds Sound File | Uncommon |
| .ariax | Chipsounds XML Sound File | Uncommon |
| .asd | Ableton Live Sample Analysis File | Average |
| .ase | Velvet Studio Sample | Uncommon |
| .at3 | ATRAC3 Audio File | Common |
| .atrac | Sony ATRAC Audio File | Rare |
| .au | Audio File | Average |
| .aud | Video Game Compressed Audio File | Average |
| .aup | Audacity Project File | Average |
| .avr | Audio Visual Research File | Rare |
| .awb | AMR-WB Audio File | Uncommon |
| .ay | AY Chiptune File | Uncommon |
| .b4s | Winamp Playlist File | Uncommon |
| .band | GarageBand Project File | Average |
| .bap | Blaze Audio Wave Information File | Average |
| .bdd | CARA Sound Radiation Data File | Average |
| .bidule | Bidule Layout File | Average |
| .box | CARA Loudspeaker Design File | Rare |
| .brstm | BRSTM Audio Stream File | Uncommon |
| .bun | Cakewalk Bundle File | Average |
| .bwf | Broadcast Wave File | Average |
| .c01 | Typhoon Wave Audio File | Uncommon |
| .caf | Core Audio File | Common |
| .cda | CD Audio Track Shortcut | Common |
| .cdda | CD Digital Audio File | Average |
| .cdr | Raw Audio CD Data | Uncommon |
| .cel | Audition Loop | Average |
| .cfa | Adobe Conformed Audio File | Average |
| .cfxr | Cocoa Sfxr File | Rare |
| .cidb | iTunes CD Information File | Average |
| .cmf | Creative Music Format | Uncommon |
| .copy | Sony Ericsson Protected Content File | Average |
| .cpr | Cubase Project | Common |
| .cpt | DTS Compact Audio File | Average |
| .csh | Cubase Waveform File | Average |
| .cwp | Cakewalk SONAR Project | Average |
| .d00 | OPL2 FM Audio File | Rare |
| .d01 | OPL2 FM Audio File | Rare |
| .dcf | DRM Content Format File | Common |
| .dcm | DCM Audio Module | Average |
| .dct | Dictation Audio File | Uncommon |
| .ddt | Jill of the Jungle Music File | Rare |
| .dewf | SoundEdit Recorded Instrument | Average |
| .df2 | Defractor 2 Instrument | Average |
| .dfc | Defractor Instrument | Average |
| .dig | Digilink Audio File | Average |
| .dig | Sound Designer Audio File | Average |
| .dls | Downloadable Sounds File | Average |
| .dm | DRM Delivery Message | Average |
| .dmf | Delusion Digital Music File | Average |
| .dmsa | Music Disc Creator Project File | Common |
| .dmse | Sound Editor Project File | Common |
| .dra | Nuance Dragon Voice Recording File | Average |
| .drg | I-Doser Audio Drug File | Average |
| .ds | LMMS DrumSynth File | Uncommon |
| .ds2 | Olympus DSS Pro Audio File | Average |
| .dsf | Delusion Digital Sound File | Average |
| .dsm | Digital Sound Module | Average |
| .dsp | Dynamic Studio Professional Module | Rare |
| .dss | Digital Speech Standard File | Common |
| .dtm | DigiTrakker Module | Average |
| .dts | DTS Encoded Audio File | Average |
| .dtshd | DTS-HD Master Audio File | Average |
| .dvf | Sony Digital Voice File | Average |
| .dwd | DiamondWare Digital Audio File | Average |
| .ear | Eyemail Audio Recording | Rare |
| .efa | Ensoniq ASR File | Average |
| .efe | Ensoniq EPS File | Uncommon |
| .efk | Ensoniq KT File | Average |
| .efq | Ensoniq SQ1/SQ2/KS-32 File | Average |
| .efs | Ensoniq SQ-80 File | Average |
| .efv | Ensoniq VFX-SD File | Average |
| .emd | ABT Extended Module | Average |
| .emp | eMusic Music Download File | Common |
| .emx | eMusic Download File | Common |
| .esps | ESPS Sampled Data File | Average |
| .expressionmap | Cubase Expression Map File | Uncommon |
| .f2r | Farandoyle Linear Module File | Average |
| .f32 | Raw 32-Bit Audio File | Average |
| .f3r | Farandoyle Blocked Module File | Average |
| .f4a | Adobe Flash Protected Audio File | Average |
| .f64 | Raw 64-Bit Audio File | Average |
| .far | Farandole Composer Module | Uncommon |
| .fda | Dawn of War Audio File | Rare |
| .fff | Gravis UltraSound Sound Bank | Average |
| .flac | Free Lossless Audio Codec File | Common |
| .flp | FruityLoops Project | Average |
| .fls | Flash Lite Sound Bundle | Uncommon |
| .frg | Sony Sound Forge Pro Project File | Average |
| .fsm | Farandole Composer WaveSample File | Average |
| .ftm | FamiTracker Module | Average |
| .fzb | Casio FZ-1 Bank Dump | Average |
| .fzf | Casio FZ-1 Full Dump | Average |
| .fzv | Casio FZ-1 Voice Dump | Average |
| .g721 | G.721 Audio File | Average |
| .g723 | G.723 Audio File | Average |
| .g726 | G.726 Audio File | Average |
| .gbproj | GarageBand Project | Uncommon |
| .gbs | GameBoy Sound File | Average |
| .gig | Tascam GigaSampler File | Average |
| .gm | Transport Tycoon Music File | Rare |
| .gp5 | Guitar Pro 5 Tablature File | Average |
| .gpbank | Guitar Pro Sound Bank File | Average |
| .gpk | WaveLab Audio Peak File | Average |
| .gpx | Guitar Pro 6 Document | Common |
| .gro | Allegro MIDI File | Rare |
| .groove | ACID Groove File | Average |
| .gsm | US Robotics GSM Audio File | Rare |
| .gsm | Global System for Mobile Audio File | Average |
| .h0 | Movie Edit Pro Waveform Information File | Uncommon |
| .hdp | MAGIX Hard Disk Project Audio File | Uncommon |
| .hma | Sony HI-MD Audio File | Uncommon |
| .hsb | HALion Sound Bank File | Average |
| .ics | IC Recorder Sound File | Average |
| .iff | Interchange File Format | Very Common |
| .igp | Igor Published Music Notation File | Average |
| .igr | Igor Engraver File | Uncommon |
| .imf | Id Music File | Rare |
| .imp | Audition Impulse File | Uncommon |
| .ins | Ensoniq Instrument | Rare |
| .ins | Sample Cell II Instrument Definition File | Uncommon |
| .isma | IIS Smooth Streaming Audio File | Average |
| .it | Impulse Tracker Module | Uncommon |
| .iti | Impulse Tracker Instrument | Average |
| .its | Impulse Tracker Sample | Uncommon |
| .jam | JAM Musical Score | Uncommon |
| .jam | Line 6 Device Recording | Uncommon |
| .jo | jo Audio File | Rare |
| .jo-7z | jo Audio File | Rare |
| .k25 | Kurzweil K2500 File | Average |
| .k26 | Kurzweil K2600 File | Average |
| .kar | Karaoke MIDI File | Average |
| .kfn | KaraFun Karaoke File | Average |
| .kin | Kinetic Music Project | Rare |
| .kit | Battery Drum Kit File | Uncommon |
| .kmp | Korg Trinity/Triton Keymap File | Uncommon |
| .koz | Bell Music File | Average |
| .koz | Audiokoz Music File | Average |
| .kpl | Kazaa Playlist File | Common |
| .krz | Kurzweil K2000 File | Average |
| .ksc | Korg Trinity/Triton Script File | Uncommon |
| .ksf | Korg Trinity/Triton Sample File | Average |
| .kt2 | Battery 2 Drum Kit File | Uncommon |
| .kt3 | Battery 3 Drum Kit File | Average |
| .ktp | Kinetic Project Template | Rare |
| .l | Left Audio Channel File | Uncommon |
| .la | Lossless Audio File | Average |
| .lof | Audacity File List | Uncommon |
| .lqt | Liquid Audio File | Uncommon |
| .lso | Logic Audio Project | Average |
| .lvp | Avaya Voice Player Audio File | Uncommon |
| .lwv | Linguistically Enhanced Sound File | Average |
| .m1a | MPEG-1 Audio File | Uncommon |
| .m3u | Media Playlist File | Very Common |
| .m3u8 | UTF-8 M3U Playlist File | Common |
| .m4a | MPEG-4 Audio File | Very Common |
| .m4b | MPEG-4 Audio Book File | Common |
| .m4p | iTunes Music Store Audio File | Average |
| .m4r | iPhone Ringtone File | Common |
| .ma1 | Monarch Audio File | Average |
| .mbr | Zune Smooth Streaming File | Average |
| .mdl | DigiTrakker Module | Uncommon |
| .med | Amiga MED Sound File | Average |
| .mgv | Yamaha MegaVoice File | Average |
| .mid | MIDI File | Very Common |
| .midi | MIDI File | Common |
| .miniusf | Nintendo 64 Song File | Average |
| .mka | Matroska Audio File | Average |
| .mlp | Meridian Lossless Packing Audio File | Uncommon |
| .mmf | Synthetic Music Mobile Application File | Average |
| .mmm | Music Maker Arrangement File | Average |
| .mmp | MixMeister Playlist | Average |
| .mo3 | MO3 Audio File | Average |
| .mod | Amiga Music Module File | Common |
| .mp1 | MPEG-1 Layer 1 Audio File | Uncommon |
| .mp2 | MPEG Layer II Compressed Audio File | Average |
| .mp3 | MP3 Audio File | Very Common |
| .mpa | MPEG-2 Audio File | Very Common |
| .mpc | Musepack Compressed Audio File | Average |
| .mpga | MPEG-1 Layer 3 Audio File | Average |
| .mpu | MPEG Layer 3 Audio File | Uncommon |
| .mp_ | Mobile Phone Sound File | Uncommon |
| .mscx | MuseScore Music Score File | Uncommon |
| .mscz | MuseScore Compressed Score File | Average |
| .msv | Memory Stick Voice File | Uncommon |
| .mt2 | MadTracker 2 Module | Uncommon |
| .mt9 | MT9 Audio File | Rare |
| .mte | MadTracker 2 Envelope | Average |
| .mtf | Multi Tracker File | Average |
| .mti | MadTracker Instrument | Average |
| .mtm | MultiTracker Module | Average |
| .mtp | MadTracker 2 Pattern | Average |
| .mts | MadTracker 2 Sample File | Average |
| .mus | Finale Notation File Format | Average |
| .musa | Aleph One Music File | Rare |
| .mws | MWave DSP Synth Instrument Extract | Rare |
| .mxl | Compressed MusicXML File | Uncommon |
| .mxmf | Mobile XMF Ringtone File | Average |
| .mzp | Mozart Percussion File | Uncommon |
| .nap | Napster Secured Music File | Rare |
| .ncw | Native Compressed Wave File | Average |
| .nkb | Kontakt Audio Bank | Average |
| .nki | KONTAKT Instrument File | Common |
| .nkm | Kontakt Multi Instrument File | Average |
| .nks | Kontakt Monolith Container | Average |
| .nkx | Kontakt Monolith Container File | Average |
| .npl | Cubase Library File | Uncommon |
| .nra | Nero Audio Compilation | Common |
| .nrt | Nokia Ringtone | Average |
| .nsa | Nullsoft Streaming Audio File | Average |
| .nsf | NES Sound Format File | Average |
| .nst | NoiseTracker Module | Average |
| .ntn | NOTION Song File | Average |
| .nvf | Creative Labs NVF Audio File | Uncommon |
| .nwc | NoteWorthy Composer File | Average |
| .odm | OverDrive Media File | Average |
| .ofr | OptimFROG Audio File | Uncommon |
| .oga | Ogg Vorbis Audio File | Average |
| .ogg | Ogg Vorbis Audio File | Common |
| .okt | Oktalyzer Module | Average |
| .oma | Sony OpenMG Music File | Average |
| .omf | Open Media Framework File | Common |
| .omg | OpenMG Audio File | Average |
| .omx | OtsAV Media Library Information File | Average |
| .orc | Voyetra Digital Orchestrator File | Rare |
| .ots | OtsAV Album File | Average |
| .ove | Overture Musical Score | Average |
| .ovw | Logic Pro Overview File | Average |
| .ovw | Cubase WAVE Overview File | Uncommon |
| .pac | SBStudio II Song File | Uncommon |
| .pat | Gravis UltraSound GF1 Patch File | Rare |
| .pbf | Pinnacle Sample Bank | Uncommon |
| .pca | Perfect Clarity Audio File | Average |
| .pcast | iTunes Podcast File | Common |
| .pcg | Korg Instrument Bank File | Average |
| .pcm | Pulse Code Modulation | Uncommon |
| .pd | Spore Audio Playback File | Rare |
| .peak | Steinberg Peak File | Average |
| .pek | Adobe Peak Waveform File | Average |
| .pho | MBROLA Phonetic Data File | Uncommon |
| .phy | PhyMod Physical Modeling Data | Uncommon |
| .pk | Audition Peak File | Average |
| .pkf | Audition Peak File | Average |
| .pla | Sansa Playlist File | Average |
| .pls | Audio Playlist | Common |
| .pna | PhatNoise Audio File | Average |
| .ppc | Adobe Presenter Audio File | Uncommon |
| .ppcx | Adobe Presenter Presentation Audio File | Uncommon |
| .prg | Akai MPC2000 Program File | Rare |
| .prg | WAVmaker Patch File | Uncommon |
| .psf | Portable Sound File | Average |
| .psm | Protracker Studio Module | Average |
| .psy | Psycle Song File | Uncommon |
| .ptf | Pro Tools 7 Session File | Common |
| .ptm | PolyTracker Module | Average |
| .pts | Pro Tools Session | Average |
| .pvc | Panasonic VM1 Voice File | Uncommon |
| .qcp | PureVoice Audio File | Average |
| .r | Right Audio Channel File | Rare |
| .r1m | RealOne Streaming Media File | Average |
| .ra | Real Audio File | Very Common |
| .ram | Real Audio Metadata File | Common |
| .raw | Raw Audio Data | Uncommon |
| .rax | Real Music Store Audio File | Average |
| .rbs | Rebirth Song File | Average |
| .rbs | MP3 Ringtone File | Uncommon |
| .rcy | ReCycle 1.x Document | Uncommon |
| .rex | ReCycle Loop File | Average |
| .rfl | Reason ReFill Sound Bank | Average |
| .rip | Hit'n'Mix Audio Mashup File | Average |
| .rmf | Rich Music Format Audio File | Uncommon |
| .rmi | RMID MIDI File | Average |
| .rmj | Real Media Jukebox Audio File | Average |
| .rmm | RAM Meta File | Uncommon |
| .rmx | RealJukebox Format | Average |
| .rng | Nokia Composer Ringtone | Average |
| .rns | Reason Song File | Common |
| .rol | Ad Lib Synthesized Instrument | Average |
| .rsn | Reason Project File | Average |
| .rso | NXT Brick Audio File | Average |
| .rti | Real Tracker Instrument | Average |
| .rtm | Real Tracker Module | Rare |
| .rts | Real Tracker Sample | Uncommon |
| .rvx | Real Protected Video File | Uncommon |
| .rx2 | REX2 Audio File | Common |
| .s3i | Scream Tracker 3 Instrument | Average |
| .s3m | ScreamTracker 3 Module | Average |
| .s3z | Compressed Scream Tracker 3 Module | Uncommon |
| .saf | Secure Audio File | Uncommon |
| .sam | MOD Edit Sample File | Rare |
| .sap | Atari SAP Music File | Average |
| .sb | Signed Byte Audio File | Rare |
| .sbg | SBaGen Binaural Beat File | Uncommon |
| .sbi | Sound Blaster Instrument | Average |
| .sbk | E-MU SoundFont Sound Bank | Uncommon |
| .sc2 | Sample Cell II Instrument Definition | Average |
| .sd | ESPS Sampled Data File | Average |
| .sd | Sound Designer Audio File | Average |
| .sd2 | Sound Designer II File | Average |
| .sd2f | Sound Designer 2 File | Uncommon |
| .sdat | Nintendo DS Sound Data File | Average |
| .sdii | Sound Designer 2 Audio File | Rare |
| .sds | MIDI Sample Dump Standard File | Average |
| .sdt | Electronic Arts Sound Data File | Uncommon |
| .sdx | Sample MIDI Dump Exchange | Rare |
| .seg | Eragon Audio File | Rare |
| .seq | PowerTracks Pro Audio Project File | Common |
| .ses | Audition Session File | Average |
| .sesx | Adobe Audition Session File | Average |
| .sf | IRCAM Sound File | Uncommon |
| .sf2 | SoundFont 2 Sound Bank | Average |
| .sfap0 | Sound Forge Audio Proxy File | Uncommon |
| .sfk | Sound Forge Audio Peak File | Average |
| .sfl | Sound Forge Sound Data File | Average |
| .sfs | SFX Sample File | Uncommon |
| .shn | Shorten Compressed Audio File | Average |
| .sib | Sibelius Score | Common |
| .sid | SID Audio File | Rare |
| .sid | Commodore 64 Music File | Rare |
| .smf | Standard MIDI File | Average |
| .smp | SampleVision Audio Sample Format | Average |
| .snd | Macintosh Sound Resource | Average |
| .snd | Sound File | Common |
| .snd | Akai MPC Sample | Uncommon |
| .sng | MIDI Song File | Average |
| .sng | Korg Trinity Song File | Uncommon |
| .sou | SBStudio II Sound File | Average |
| .sppack | SPPack Sound Sample | Average |
| .sprg | Synclavier Program File | Average |
| .spx | Ogg Vorbis Speex File | Uncommon |
| .sseq | Nintendo DS Sound File | Average |
| .sseq | Synclavier Sequence File | Uncommon |
| .ssnd | Synclavier Sound File | Average |
| .stap | Soundtrack Pro Audio Project File | Average |
| .stm | Scream Tracker 2 Module | Average |
| .stx | Scream Tracker Music Interface Kit File | Average |
| .sty | Yamaha/Korg Keyboard Style | Uncommon |
| .sty | Band-in-a-Box Styles File | Average |
| .svd | Roland Patch File | Average |
| .svx | 8SVX Sound File | Uncommon |
| .sw | Signed Word Audio File | Rare |
| .swa | Shockwave Audio | Average |
| .syh | Synchomatic Instrument | Average |
| .syn | Synergy On Air Audio File | Rare |
| .syn | SimSynth Document | Average |
| .syw | Yamaha SY99/SY85 Audio File | Average |
| .syx | MIDI System Exclusive Message | Average |
| .tak | Tom's Lossless Audio Kompressor File | Average |
| .tak | Music Maker Take File | Uncommon |
| .td0 | Akai Teledisk Sound Library | Average |
| .tfmx | Final Music System Tracker Module | Rare |
| .tg | TuxGuitar Document | Average |
| .thx | Amiga THX Tracker Music File | Uncommon |
| .toc | PSP Audio File | Uncommon |
| .tsp | TrueSpeech Audio File | Uncommon |
| .tta | True Audio File | Average |
| .tun | LEGO Racers Audio File | Rare |
| .txw | Yamaha TX16W Audio File | Average |
| .u | AU Audio File | Average |
| .uax | Unreal Audio Package | Average |
| .ub | Unsigned Byte Audio File | Uncommon |
| .ulaw | Raw u-Law Audio File | Uncommon |
| .ult | UltraTracker Module | Average |
| .ulw | u-Law Audio File | Rare |
| .uni | MikMod UniMOD Module | Average |
| .usf | Nintendo 64 Music File | Average |
| .usflib | Nintendo 64 Song Library | Average |
| .uw | Unsigned Word Audio File | Average |
| .uwf | UltraTracker Wave File | Average |
| .vag | PlayStation Compressed Sound File | Average |
| .val | Olympus Voice Recording | Rare |
| .vap | Dialogic Indexed Voice Audio File | Average |
| .vb | Grand Theft Auto Audio File | Uncommon |
| .vc3 | VSampler Soundbank File | Average |
| .vdj | Virtual DJ Audio Sample File | Uncommon |
| .vgm | Video Game Music File | Uncommon |
| .vgz | Video Game Music Compressed File | Uncommon |
| .vmd | Covox Raw Sample | Average |
| .vmf | Vocaltec Media File | Uncommon |
| .vmf | Covox Speech Thing Sample | Uncommon |
| .voc | Creative Labs Audio File | Average |
| .voi | Voyetra Voice File | Rare |
| .vox | Dialogic Voice Audio File | Average |
| .vpm | Garmin Voice File | Average |
| .vqf | TwinVQ Audio File | Average |
| .vrf | Ventrilo Audio Recording | Average |
| .vtx | VTX Chiptune File | Uncommon |
| .vyf | Samsung Digital Voice Recorder File | Average |
| .w01 | Yamaha SY Series Wave File | Average |
| .w64 | Sony Wave64 Audio File | Average |
| .wav | DTS-WAV File | Uncommon |
| .wav | WAVE Audio File | Very Common |
| .wave | WAVE Sound File | Average |
| .wax | Windows Media Audio Redirect | Average |
| .wfb | WaveFront Sound Bank | Average |
| .wfd | WaveFront Drum Kit File | Average |
| .wfp | WaveFront Program File | Average |
| .wma | Windows Media Audio File | Very Common |
| .wow | Grave Composer Music Module | Average |
| .wpk | Nero Wave Editor File | Average |
| .wpp | WavePad Project File | Uncommon |
| .wproj | Wwise Project | Average |
| .wrk | Cakewalk Music Project | Average |
| .wtpl | WireTap Studio Library | Uncommon |
| .wtpt | WireTap Studio Packaged Track | Uncommon |
| .wus | WUTG Tagged Audio File | Average |
| .wut | WUTG Tag File | Average |
| .wv | WavPack Audio File | Average |
| .wvc | WavPack Correction File | Average |
| .wve | WaveEditor Project File | Average |
| .wwu | Wwise Work Unit | Average |
| .wyz | WYZTracker File | Rare |
| .xa | PlayStation Audio File | Uncommon |
| .xa | The Sims Audio File | Average |
| .xfs | eRacer Sound File | Average |
| .xi | Fasttracker 2 Extended Instrument File | Rare |
| .xm | Fasttracker 2 Extended Module | Average |
| .xmf | Extensible Music File | Uncommon |
| .xmi | Extended MIDI File | Uncommon |
| .xmz | FastTracker 2 Extended Module | Uncommon |
| .xp | Fastracker 2 Pattern | Rare |
| .xrns | Renoise Song File | Average |
| .xsb | XACT Sound Bank | Uncommon |
| .xspf | XSPF Playlist File | Average |
| .xt | Fastracker 2 Track | Rare |
| .xwb | XACT Wave Bank | Uncommon |
| .ym | Atari ST Audio File | Rare |
| .zpa | Vielklang Audio Metadata File | Uncommon |
| .zpl | Zune Playlist | Average |
| .zvd | ZyXEL Voice File | Average |
| .zvr | SAFA Media Audio File | Rare |