Isn't the music thing a dashboard option? Meaning it just plays whenever you want?
I don't see how the developers can choose if they don't want it to apply to their game if the music thing is really a part of Xbox 360. Maybe the devs have a say, which is what I'm guessing, if the music box can be acessed during their game.
Anyways, it will be able to be on during most multiplayer games, and that's the only time I'll be listening to my own stuff anyways (heck, I might still opt for the dynamic game music). Music tends to distract me when I'm trying to do other things.
