cool, what material did you find about sending program changes etc.? i have looked but having difficulty getting
parts to work.
sites i have come across
http://hyperglitch.com/articles/standalone-midi-controller
http://interactive21.net/wordpress/archives/9
http://arduino.cc/playground/Learning/MidiFoot
http://www.codeproject.com/Articles/38203/Arduino-Based-MIDI-Expression-Pedal
and theres a few others i have seen, i imagine you have seen these same links?
cheers