The problem here is that my dad isin't getting dolby surround out of his dvd player. There is a digital coax connection between the player and the reciever, and i'm sure the reciever supports dolby 5.1 because i play on the same system with my xbox with an optical connection, and a dolby indicator light comes on. My guess is that the reciever just doesn't like coax connections, but my knowledge of home theaters is a LOT less than of computers, so any help would be really great. Thanks in advance. 