I just realized that ive had my sound setup wrong.. I have an iMac g5 with logitech x-530 5.1 speakers..I just used a headphone splitter to hook up my speakers.. so i guess im only getting stereo sound.. I know i need a usb sound card to get the full surround sound? This will make a huge difference in my sound right? (can you pick out a model from bestbuy, i work there so ill get a huge discount) Thanks..