I use the rig in my system specs mainly to play Oblivion and other games, mp3 music and to watch dvds. I've got the Z5500 logitech as speakers but for now am using the onboard sound (soundmax) of my motherboard. I don't understand much about the specifications of soundcards, I would like to spend my money on a very good one but not one which would be overkill. Preferably one which doesn't use the cpu and ram (unless that would be overkill). Btw does Oblivion support OPENAL and EAX? Also, any idea on the price of the X-FI Prelude? Which card do you have and was it good value for money? Thanks for any feedback!