I think certain games have custom soundtrack options, but it isn't a universal option.. YET. But so much crap is coming with home and the trophys and all these other updates that I am certain that it will be here in the future.
Well not really but I had a friend working there selling it to me for $495.00. He told me I just bought the last one. I know some U.S. stores still got.
I remember it coming out for psp, ps1, and GBA, but never the ps3, and I'm pretty sure they don't intend to put another out. Namco is slowly dying sadly