Overview | URL/scheme | protocol/ports | File Extension | MIME | Audio-Video | Java | Test Files | Image | Audio | Video | Wireless
.aa	audio/audible 	Audible file format (audio books)
.aac	audiio/aac	Advanced Audio Coding File (Apple iTunes Store)
.ac3	audio/ac3	Adaptive Transform Coder 3 
    (relates to the bitstream format of Dolby Digital)
.aif	audio/x-aiff	Audio Interchange File Format
.aifc	audio/x-aiff	Audio Interchange File Format
.aiff	audio/x-aiff	Audio Interchange File Format
.ale	Apple Lossless Encoder (same as m4a)
.ape		Monkey's audio 
.asx	application/x-mplayer2 	Advanced Stream Redirector File
.atrac		Adaptive TRansform Acoustic Coding
.au	audio/basic	8-bit u-law [PCM] / 8000 Hz
.cht	audio/x-dspeech	Chart (Harvard Graphics 2.0 - SoftCraft Presenter)
.dct		Express Dictate's raw format like .wav
.dus	audio/x-dspeech	Readiris font dictionary
.es	audio/echospeech	
.flac	audio/flac	Free Lossless Audio Codec
.g726	Raw CCITT/ITU G.726 2, 3, 4 or 5bit ADPCM data : Sound data
.gsd	audio/x-gsm	GSM Internet Realtime Audio 
.gsm	audio/x-gsm, application/x-gsm	Raw GSM 6.10 Audio Stream 
.kar  -  audio/midi
.la	audio/nspaudio	Netscape Packetized audio 
.lma	audio/nspaudio	Netscape Packetized audio 
.m3u	audio/x-mpegurl	Music Playlist (Winamp)
.m4A		MPEG-4 Audio Layer - Apple iTunes AAC and ALE unprotected
.M4B		Apple iTunes AAC protected audiobook
.M4P		Apple iTunes AAC protected
.mid	audio/x-midi	MIDI
.midi	audio/x-midi	MIDI
.mp2	audio/mpeg	MPEG Audio Stream, Layer II 
.mp3	audio/mpeg, audio/x-mpeg3, audio/mpg 	MPEG Audio Stream, Layer III 
.mp4	 audio/mp4	MPEG-4 (MPEG-4 is a Video format but has an audiio component)
.mpa	audio/mpeg	MPEG Audio Stream, Layer I, II or III 
.mpga	audio/mpeg	
.ogg	audio/x-ogg 	Ogg Vorbis open-source audio format
.pls	audio/x-scpls	MPEG PlayList
.ra	audio/x-realaudio	Music (RealAudio)
.ram	audio/x-pn-realaudio	RealMedia  Metafile
.rax		RealAudio 10 - RealMedia Streaming file
.rm	audio/x-pn-realaudio	Real Audio
.rmf	audio/x-rmf	Rich Music Format audio file from Beatnik
.rmi	audio/mid	MIDI File 
.rpm	audio/x-pn-realaudio-plugin	RedHat Package Manager
.shn		Shorten Audio Compression File
.stream	audio/x-qt-stream	
.tsi	audio/tsplayer	TSP-audio
.vox	audio/voxware	Vox Audio
.vqe	audio/x-twinvq-plugin	Yamaha Sound-VQ Locator file
.vqf	audio/x-twinvq	VTransform-domain Weighted Interleave Vector Quantization.
       (TwinVQF) Music File 
.vql	audio/x-twinvq	Yamaha Sound-VQ Locator file
.wav	audio/x-wav, audio/wav	Windows Audio File WAVE format
.wax	audio/x-ms-wax	
.wma	audio/x-ms-wma	Windows Media Audio

Windows Media Audio Decode (Format Tag: WMA2 = 353, WMA1=352) 

Supported file formats include .m4a, .mp3, .mov, .mp4, .m4v, and .pdf.

A podcast news feed may look like:
≶enclosure url="http://static.podcatch.com/manila/gems/un/TS20041107.mp3" length="49885056" type="audio/mpeg"/>

See also:
File Types
Audio File Formats at SonicSpot.com Audio Formats in AV
Audio Video
Digital Audio Players (ipod, zen, ...) in products
Media Players (software)

last updated 27 July 2005