peter The Amplitube app has a "Learn" dialog. You can press a button and so forth to assign to a parameter. I suppose I could setup a program change command in ST3 and send that to Amplitube with my MacBook then simply loop back the midi in/out and run it from the same iPad instead of externally with the MacBook?!?!?
I'll need to check exactly what Amplitube is asking for. I am sure ST3 can provide whatever is needed...