AVS Special Member
Join Date: Dec 2008
Location: SoCal (L.A. area)
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The connections the OP listed in his first post should work, providing he is not trying to listen to audio from the TV's internal tuner. Panasonic TVs output 2 ch. stereo from source devices connected to the TV, but for the internal tuner they output DD5.1 (when available). There is no setting to force PCM out for the tuner's audio.
Digital optical is the only audio out on this TV.
OP should check the Viera settings on his TV to be sure he has speakers set to "external".