Here is the system we were looking at http://www.bose.com/home_audio/ht_systems/ls35/ Now When I lookied at the back of the receiver all I saw was a digital optical connection for 5.1, no digital coax. So I asked the guy what happens if I have a dvd player with digital coax? how do I get 5.1? He tells me just hook up my regular composite audio RCA jacks from the dvd player into the receiver. He then explains that the reciever will change the signal to 5.1. this can't be right can it? please help.