Greetings. I just purchased the Logitech Z-680's, and just finished setting them up. Im almost positive that all the wires are connected properly. However, i cant seem to get any sound out of the speakers. The 5.1 is an upgrade to the 2.1's i used to use, so i thought to adjust the sound card settings accordingly. Any help would be MUCH appreciated, i really really want sound, and im running out of ideas to get it working.