If you don't have a receiver capable of playing Dolby Digital 5.1 coming from your XBOX but do have a set of 5.1 computer speakers this solution is for you.

You can pick up a Sound Blaster Extigy for about $125 (street price). It is intended to be used as an external sound card for the PC but it will operate without anything connected to the USB interface.

Simply attach your TOSLINK cable from the Advanced or HD A/V pack to the Extigy, then attach your powered 5.1 speakers to the rear of the unit and you're good to go.

Here are the technical specs:
http://www.americas.creative.com/pro...t=251&nav=spec

NOTE: The Extigy cannot be used for DTS in this manner. The best it can do is Dolby Digital 5.1. If you want DTS you'll need to spend another $45 and get the Klipsch DD-5.1.

Of course, I recommend investing in a true DD 5.1/DTS receiver and a nice set of speakers. However, I know that we have a lot of budget-conscious gamers on the board.