System Audio Input/Output
iPad Air 2: I want to mix playing in Amplitube with an audio file playing in Music App. I expected that I could control volume of Music App with AB's Mixer independant from the main system volume but no luck yet.
I thought that is what System Audio Input/Output are for but I really don't understand what AB is doing.
Don't know if I need an additional app to input audio in AB or this can be done with the Music App (not AB compatible).
Any pointers to prev. discussions covering basics of AB and system audio would be appreciated. I don't understand how AB works and the Help files are not elementary enough for me.