My current Xbox is hooked up to Logitech Z-680 5.1 speakers via optical. As you know, the optical cable plugs directly into the SCART unit of the Xbox. For the Xbox 360, I was thinking of upgrading my speakers to Logitech's new Z5500 range as my experiences with the Z-680 are quite positive. I've also come to understand that component cables will produce the best possible PQ on an LCD screen such as the V-Series from Sony. My question is, where will the optical cable go if one end is obviously plugged into the decoder of the speakers themselves? Thanks a bunch.