light midi controller

Hi, im new here, and i quite curious cause i was not able to find all over the net for an understandable DIY tutorial to do this: http://www.youtube.com/watch?v=eULFuQ9cs8s

Te thing is that im a music producer so im not familiarized with electronics although im very studious so if i have the information i feel able to do it, but i could not find it on the web. Is here in Arduino any tutorial and info about how to do this device: a MIDI LIGHT CONTROLLER????

thanks

Typing "arduino midi" into google gives hundreds of useful results.