Not sure about your setup, you haven't told us about your receiver/processor. Figure it's a 5-7 channel unit. You connect the output from the DVD player to the input in the receiver/processor. If you want to use DTS, or THX, you need to use either a Toslink optical cable or a coaxial connection. There are various input choices on most receiver/processors. You must select from your setup menu the proper input path that you use to connect your processor/receiver to the DVD player.

Hope this helps.

Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.