Because Sony left it up to the devs. I don't see why they couldn't make it mandatory like they did with the useless trophies OR just build it into the console itself. It's not a terrifically sophisticated function and they already have everything needed for the function already built in. They just need to build it into the firmware... but that's apparently patented by MS or would cause a boycott by EA or something like that. I heard a bunch of excuses. It seems like all I hear about the ps3 are excuses.omega_peaches said:Speaking of which, why can Xbox play music while playing games, but PS3 can't?