Thanks, I'll give it a try. I had already explored my TV's settings, and was frustrated on my attempt. That is, I set something that I thought was correct to ARC, for audio output. I will try harder and report my results.
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Home Theater Side:
Outlaw 975
Outlaw 7075
Panasonic TC P50ST60 plasma TV
Oppo BD-103 blu ray
LG-LST3510 OTA STB
Channel Master CM-4221 HD UFH antenna
Monster HTS 2600 mk.II power management

Audio Only Side:
McCormack RLD-1 Preamp (has theater pass-thru)
Onkyo CD Player LX-7555
Thorens TD 320 MkII

Speakers:
Vandersteen 1C, VCC, 2Wq
Cambridge Soundworks surrounds