I was jus thinking about the principles of a Kaoss Pad, you move ur finger around in it to edit the way sounds are produced. If you don't know what one is look at the second solo in this video: http://www.youtube.com/watch?v=vLNKqXsyns0 The Kaoss Pad is the white, swirly thing at the bottom of his guitar. It manipulates the sound of the guitar. I just wonderd if it was possible to make an app that allowed you to play your music, and you could use an emulated Kaoss Pad on your iPod to change the sound. Be pretty good fun. The display could just look like this: Please Register or Log in to view images And as you move your finger the light follows it. It's REALLY complicated but I think it is possible.