Music & Memory is a non-profit organization that brings personalized music into the lives of the elderly or infirm through digital music technology, vastly improving quality of life.

A public archive of public domain digital audio files.

Discussion board for various digital audio software and hardware for Apple's Mac OSX.

Resources and infomration at About.com on digital music and MIDI.

Audacity is free, open source software for recording and editing sounds. It is available for Mac OS X, Microsoft Windows, GNU/Linux, and other operating systems