I know you crazy coders can find something about this... Ever been on the phone on your iPhone, and notice you still have the ability to listen to music? Maybe someone could design an app or a mod so that the phone is in one ear and the music in another?
I have thought about that haha =). It would be better if the voulme turns down to like 20% and the music and the call is in both ears. Then the music is so low that you wont be distracted, but its still there