a) HDMI does carry digital audio - you might not need anything else.
Check your new SAT box settings and make sure it set to send audio using hdmi.
Thanks, but I'm not sure how to make it work with only one HDMI line running between the TV cabinet and the AV cabinet? Perhaps I'm missing something.
The system I described in my first post is my upstairs system. I have another system downstairs that is almost identical, except that in the downstairs system the satellite box, AV unit, and Blu Ray player are all in the same cabinet. This works fine. The satellite box HDMI output is connected to an input on the AV unit by an HDMI line. The Blu Ray player is connected to a different input on the AV unit by an HDMI line. The AV output is connected to the TV by an HDMI line. Everything is hunky-dory. I just select the input I want on the AV unit (satellite or Blu Ray) and I get surround sound and the TV gets a video signal from the AV unit.
The big problem in the upstairs system is that the satellite box is in the same cabinet as the TV, not in the cabinet with the AV unit and Blu Ray player. If I run the one HDMI line from the satellite box in the TV cabinet to the AV unit in the AV cabinet, this will give me surround sound, but I then have no HDMI line to plug into the TV for video. If the HDMI line out of the satellite box could be split, then one leg could go to the HDMI input on the TV and the other to the AV unit. This should give me audio and video when watching satellite. However, how do I then get video from the Blu Ray player in the AV cabinet to the TV in the TV cabinet? The one HDMI line running between the two cabinets would already be connected to the HDMI splitter in the TV cabinet, not to the HDMI port on the TV. I don't see how that could work unless the splitter had some sort of a switch that would allow one to pass the signal from the AV HDMI port to the TV HDMI port?
I'm not familiar with 2-way HDMI. Would it be possible to run the HDMI line directly from the satellite box to the 1st HDMI port on the TV, then run another HDMI line from the 2nd HDMI port on the TV to an HDMI input on the AV unit? For satellite TV, would the TV pick up the video signal and pass the audio signal to the AV receiver out through the 2nd HDMI port on the TV? Then, when watching Blu Rays, would the audio and video from the AV unit feed video into the 2nd HDMI port of the TV?