
 * Sample MPEG-1 Audio Layer I, II, and III files for testing implementations
http://standards.iso.org/ittf/PubliclyAvailableStandards/s022691_ISO_IEC_11172-4_1995(E)_Compliance_Testing.zip

 * MPEG Audio Frame Header by Konrad Windszus
http://www.codeproject.com/KB/audio-video/mpegaudioinfo.asp

 * Mp3 Info Tag rev 1 specifications
http://gabriel.mp3-tech.org/mp3infotag.html

 * Mpeg Audio Frame Header
http://www.mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm

 * ID3 tag version 2.3.0
http://www.id3.org/d3v2.3.0

 * Maaate! The Australian audio analysis tools
http://maaate.sourceforge.net/

 * Implementation details about an mp3 decoder
http://www.mp3-tech.org/programmer/docs/bitstream.zip

 * MPEG 1 layer 1/2/3 MPEG 2 2/3 Test Data
http://mpgedit.org/mpgedit/mpgedit/testdata/mpegdata.html

 * Lame Y switch
http://wiki.hydrogenaudio.org/index.php?title=LAME_Y_SWITCH

 * MP3 format at Hydrogenaudio Knowledgebase
http://wiki.hydrogenaudio.org/index.php?title=MP3

 * APEv2 specification at Hydrogenaudio Knowledgebase
http://wiki.hydrogenaudio.org/index.php?title=APEv2_specification

 * Home site of mp3PRO technology
http://www.mp3prozone.com

 * Introducing mp3Surround - also many samples
http://www.all4mp3.com/learn/mp3-surround.php

 * Wave File Specifications
http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/WAVE.html

 * RIFF file format
https://www.daubnet.com/en/file-format-riff

 * Wav (RIFF) File Format Tutorial
http://www.topherlee.com/software/pcm-tut-wavformat.html

 * Definition of Lyrics3 tag
http://id3.org/Lyrics3

 * Specification for the (new) Lyrics3 v2.00 tag
http://id3.org/Lyrics3v2

 * Description of MusicMatch tag
https://github.com/dreamindustries/id3lib/blob/master/doc/musicmatch.txt

 * Old home page of the BladeEnc developer
http://home8.swipnet.se/~w-82625/default.htm

 * BladeEnc binaries for several OSs
http://www2.arnes.si/~mmilut/BladeEnc.html

 * Paper: detection of double-encoded MP3 files
https://www.researchgate.net/publication/220340299_Detection_of_Double_MP3_Compression

 * Wikipedia article about ID3
https://en.wikipedia.org/wiki/ID3

 * Details for various ID3 implementations
https://exiftool.org/TagNames/ID3.html

 * Specification of the Enhanced Tag (Wayback Machine)
https://web.archive.org/web/20100915142941/http://www.fortunecity.com/underworld/sonic/3/id3tag.html

