Thanks, I didn't make that connection even though I read a couple of threads here about home theatre. This is a non-PVR Rogers HD Terminal (so I guess 4642HD?). Not sure exactly what the outputs are, I'll check.
The current configuration is a 37" LCD on the wall with the box on a table under it. HDMI from box to TV. Head of the bed is beside the TV, in theory you can watch the TV from bed (full-motion mount) but it means lying on their side. There's a couch just past foot of the bed.
Without dealing with audio, my idea was to put a new TV beside the couch (so by foot of bed) which they'd see from bed. Switch current TV to component and run 25' HDMI cable and IR extender around baseboards to new TV. Either use an IR extender and long audio extension cable, or get Monoprice's HDMI piggyback solution #9964 (U$22 from Monoprice or C$33 from PrimeCables.com). That would probably degrade the current picture slightly (component instead of HDMI) but would minimize clutter around the baseboards.
From your response above, I could run RGB video into the current TV, and RW audio into the TV or an external speaker, then control audio from the cable box (and Slingbox). Is there any way to disable the HDMI audio coming from the TV? Then I could keep all-digital video and have analogue audio which I can control. That might be worth doing even with just the 1 TV (or I could change it from HDMI to component).
When I put in the 2nd TV, I guess I could use a component splitter for the video and run component RGB to both TVs, then RW audio. Was trying to reduce clutter and also it will make me regret all the component cables I've thrown out/given to Value Village.
It would be better if I could run HDMI and disable audio on the TV (beyond Mute or Vol=0, i.e. no way for the user to turn on TV audio, equivalent to running RGB and not RW to the TV). I suppose there are ways to set at least some TVs not to use the audio? I don't know if they'll go for a 2nd TV but it should be something that uses the same codes as their current LG (so the same remote will control either TV).
Finally here's an ugly ASCII diagram in case I'm not clear. There's more room to the left of the diagram, and there's a window to the right. TV1 is current on wall, TV2 is proposed on a small table.
Thanks for the assistance, and for any more advice!