I recently purchased the Panasonic SC-HT 740 and so far it works great. However, I would like surround sound to come from my PS2, TV, as well as the DVD player. However I can only get the DVD player to put out the 5.1 speakers. Because I only have one audio pair in back of my receiver, i don't believe i can get it from all three systems. is there any way to do this? could i take an old 5.1 receiver and include that in the home theatre system? will it lose power since that is only 500w, while the Panasonic SC-HT 740 is 1000w? Is there a splitter of any kind that will increase the amount of inputs?