Stanwall, thanks for stating that your experience with cable TV audio quality wasn't better than satellite, as I would hate to go through the trouble of switching and end up regretting it.
Davehrab, thanks for explaining things I didn't know about how the noise can be transferred from the satellite box back to the pro/pro. Replacing the digital coax audio cable between satellite DVR and Pre/pro, with the optical TOS link, has made such an improvement, that if I had that in place before, I would not have started this thread.
I have been told that the signal is more compressed than MP3, and that the signal has irrepairable damage to it by doing so. This same friend(audio engineer) said they tried improving the audio by running it through tube gear that should have sweetened it up but that the digital noise still comes through. Has anyone found a way to improve the digital sound for listing to music programming through satellite or cable TV? Can it be highly amplified, cleaned of noise, and then attenuated back to usable levels?