http://esewww.essex.ac.uk/~djmrob/filetypes.html Information on common internet audio formats and utilities to replay them. http://flac.sourceforge.net/ FLAC is an open source lossless audio coder that produces audio files supporting streaming, seeking, and archival. http://www.destinympe.com/ Secure streaming media format giving authors, songwriters and publishers complete control over products distributed through the internet. http://ekei.com/audio/ Detailed comparison of various audio compression algorithms including ASF, RealAudio, MP3, Ogg Vorbis, MOV, and VQF. http://www.ccms.net/~aomit/oplx/ Contains links and information for programming the Yamaha OPL2 and OPL3 FM synthesizer chips found on most PC sound cards. http://listen.to/voidaudio Comprehensive source of information about computer audio formats and sound cards.