Fraunhofer IIS: MP3 - - Features history and technical information about the MP3 format.
ID3v2 - - Description of ID3 tagging standard (version 2) for MP3 files. Includes specifications, implementations and a mailing list.
MAP - MP3 Audio Player - - Describes how to build a standalone home stereo MP3 player. The player is DOS-based and built with standard low cost PC-components.
MP3 Tech - - Source of detailed technical information about audio encoding with MP3 and similar formats. Features documentation, articles, source code and a message board for programmers.
MPEG Audio Frame Header - - Technical explanation of how MPEG audio files and their headers are constructed.
MP3licensing.com - - Details of the MP3 licensing programs for Thomson Multimedia and Fraunhofer IIS-A.
MP3-O-Phono - - A custom made MP3-player device. Site contains many implementation details as well as photos.
MP3Pro Soft - - Features software and information about mp3PRO and other similar audio formats.