CD sales available on most of these sites:

Ken Field

Dan Weiner

Shimon Ben-Shir Group

Heathen Creek

Chiefly

Mark Tigerman

musopen.com

...Thank you all, you make this a lot more fun.

Maura McDonnell's Visual Music blog

Stephen Malinowski's Music Animation Machine

Dennis Miller's Visual Music Marathon

Karen Aqua

Alex Voorhoeve

Center for Visual Music

Iota Center

Color Piano Project

This great open source software has made it all possible!

Fast Light Toolkit

The portaudio project

GD graphics library

libsndfile

LAME mp3 encoder

SoX Sound Exchange utility