Interesting idea - but I dont think its one that could be done via the same host - on most LFS servers require a massive amount of upload and download (for a large amount of racers). Add media streaming to each one and you're gonna be maxing out a fairly large line that most couldnt afford to rent/own for a game server.
Plus I'm sure we'd all disagree on the music being played fairly often
How irritating is it when you get a kid in CounterStrike or something, turning on voice comms and spamming the current song he's playing?!