Paruby - A library for Ruby that wraps PortAudio v19. Please see the readme for current information. STATUS: In development.
Older Stuff:
tennisQtz.app v1.0 1.1MB zipped dmg
tennisQtz is a simple game that demonstrates how to use Quartz Composer and Cocoa/Objective-C together to make a game. Source code is included. It requires Mac OS X 10.4.
Move your mouse over the images to remix them, or watch the pictures remix themselves.
Here is an extension of the image display from above. It's a compact gallery that can hold an arbitrary number of similar sized pictures. The coding still needs some refinement but it works in Firefox, Safari and IE 6.