I have a Comcast HD DVR and bought a Panasonic combo DVD/VHS recorder. I don't need HBO or HD to go to the DVD. I see where I could hook up an Svideo but there is no extra sound out other than digital Optical out that I could use. None of the DVD's have a digital optical in. I don't want to mess with the existing hookup for fear of losing the HD signal. Any suggestions?
If you're running the optical-out from the DVR into a home theatre receiver, use RCA audio cables from one of the receiver's A/V outputs to get the sound into the Panasonic recorder.