Ok, I freely admit it, but I don't understand midi and midi controlling. Further more, I barely understand Mainstage. But having said that, I've noticed that when I change a preset in my Helix, it changes to a different song in my Mainstage play list. Now I didn't set this up to do it, but I would love to be able to consciously set things up so that when I change a preset, associated with a particular song, Mainstage would switch to that song. Anyone have any idea. It would be greatly appreciated.