Well I would highly doubt that it is correctly wired for home theater. The only time we loop wires out of a box is for volume controls. Home theater wired correctly should have at least 5 wire pulls to the main junction for your five seperate channels of theater in 5.1. Your best bet is to try to find the contractor who wired the job and they should have notes or a file on it to see how it was wired. If not a continuity tester (found on most multimeters) can help you trace and distinguish between wires that are already in walls. good luck