I just purchased a Yamaha RX-V540 and I love it. My only problem is that I cannot get the digital audio from my digital cable box to work. The cable box is the Motorola DCT2500 offered by Shaw here in Western Canada. I'm trying to use the optical connection but I must be missing something. I set up the Audio options on the box to use Dolby, no compression, and Matrix setup. Now, the thing is that I understand you only get digital audio if you're on a digital channel, so I go to the music channels which are meant to be digital but I get nothing. I can use the regular red and white connections but this is not what I want. If I pull the optical connection out of the receiver there is no light coming out of it whereas if I pull the DVD cord out there is light coming through, so I tend to believe this is a problem with the DCT and not my receiver. If anyone knows something else I can try, please let me know.