Spacializer — Spherical Sound Clouds
Spacializer is a flash animation of slowly moving clouds of different colors by Sébastien Chevrel, an artist, designer and programmer focusing on interactive media.
The animation itself creates a faint background noise when left alone. Moving your mouse cursor above different colors and the spots where different colors mix results in changing sounds all very spherical. Great for the intro to your next sci-fi flick.
Spacializer (The flash source code is available.)