Oh my bad, I kind of skimmed through and thought you were asking about a sound card. Nice, if that's a shot of your i/o board, then you already have optical output (and coaxial, but no one uses that, even though it's basically the same thing). It really depends on how much you're looking to spend. If you're using this as a media center, then go balls out and get a bad-ass system, if not, then just read some reviews.