This is the interactive wall that we worked on last school year. Quite an involved project. Many hours were spent working on it. It’s got 11,000+ lines of code. I helped out with making a ambisonic sound panner for the wall’s 8 speakers. Check out Ken’s site for a more detailed write up. We’re planning to open-source parts of the wall’s code for other’s benefit, including the ambisonic sound!
Update:
The code is now available for download now. http:/code.google.com/p/willescode