For nonstudio use of a computer, even putting in a sound card is a waste of money. As good as some of the cards listed above are, the only logical choice is to use the spdif from the motherboard. All you need is an output for the digital signal. Good soundcards are required for mixing, and even not then. The real question is: if you're not going to connect the computer to the regular system, then what type of speakers would be the best. The newer computer speakers, or possibly nearfield speakers that are bi amped. So, anyone have suggestions or experience with near field speakers?