You can change it in the settings on the Xbox somewhere, I forget where.
Out of interest. How would you hear the music and the guys talking through the TV but not when they are on a mic?
to be perfectly honest mate, I hadn't thought of that until after I'd typed it. lol
The real trouble is though, is that if I have music on I generally have my ipod in my ears since I lock myself away in my office most of the time to play my Madden games. But if I have to have a mic on, I can't listen to music (least not in both ears) this saddens me, especially since the commentary in Madden 12 and Madden 13 sucks and I hate it and I'm not sitting there in silence whilst playing my games.
But having said that, I guess I have no choice but to have a mic plugged in while I play, but I really don't like it but I have no choice.