OK... so, if I buy the 5.1 system, you guys recommend the Game Theatre XP over the SB cards. Great. Here's my question; I'm mostly going to be using it for music. Not a lot of gaming or dvd's. Will the 5.1's sound any better for playing music than the 4.1's? I don't mind paying the extra $$'s if there is a difference in the sound quality, even if it's slight. Oh, and if the 4.1's are the way to go, what sound card would you recommend? Thanks!