As good an idea this is, it'd be impossible to actually put in the game, due to copyright issues.
Lets say you upload a paortion of a song thats' copyrighted. and they somehow get wind of it. Guess who's getting sued? Not you, but the Developers.
Then, theres just those idiotic trolls who would upload music with a bunch of cuss words in it, which would cause actual children who play the game to cry or something. Or worse, their parents overhear it, and spread the word to not have parents buy the game for their kids.
PSN~ MilliardoPcraft PSASBR Mains: Zeus/Kat/G.Cole/E.Cole Official Crash Bandicoot/Hades of the PSASBR Board.