EEman: yes that is my setup, only I used "Disc" for the dvd player (should not matter -- I assume these are all equivalent).

Owl's_Warder: don't think so. mapping is as described above.

I tried instead to route audio from tv back to 975 using optical cable, now both sources (dvd and tv) play fine except optical seems to be only passing stereo back to 975
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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