The Sheik is right. Re DTS signals -- be sure that you always add an audio connection via garden variety two-channel RCAs from any digital equipment where you might want the signal to go to a second zone. Also, I have Hitachi DVD demo disc where one of the cuts -- of a Japanese orchestra playing classical music -- gives no audio on the digital outputs, but only from the RCAs. Confuses the heck out of me, but it makes me cover myself by always including regular RCAs from the DVD outputs.
Ernie
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw