Schall-Magnet

I like this tutorial very very much.

http://1024d.wordpress.com/2011/07/04/madmapper-tutorial-turn-a-building-into-a-giant-equalizer/#more-1055

MadMapper is Fun 😀 in combination with Quartz Composer its really easy build your first inhouse or outdoor BIG Equalizer.

Here is my screencast:

http://screencast.com/t/8jX9XeV8

Code you find at bitbucket: