Just got my Comcast service yesterday with DCT6412. Hooking up either of the digital outs to my DAC yeild nothing. My DAC is not a 5.1 processor, but just a PCM 2.0 DAC. Works well with all DVD players I have and accepts a variety of sample rates. The 96khz light comes on when I connect the dig audio cables to the device, but just digital noise. Is there a setting for the kind of output? Any help.