I'm not sure if in-game XMB is optional for developers.
In-game XMB isn't optional, but using XMB to play music in a game has got to be, seeing as XBM has told me to quit the game if i wanted to play back audio every time I tried.
And what's wrong with SOul Calibur's soundtracks?
everything is wrapped in gray
i'm focusing on your image
can you hear me in the void?