I have a pioneer pro-logic surround sound receiver. I want to get a dvd player to hook up to it. Previously, I run the coax to the back of it from my vcr. I am assuming that it is picking up the surround sound from the video signal. The new dvd player, will it have a compatible signal so that I can still have surround sound? Does the DVD player have a compatible format? Do the dvds have muliple sound sources to choose from? What would be a good dvd player for my receiver?