I finally found a way to set the TV to "PCM" audio as an override. I am now getting audio on both Live and Recorded shows. Roku settings for DTS and Dolby seem to work, but I still need to experiment under different scenarios.
Than You everyone for your input.
When I look at the manual for the TV, it states:
"HDMI Audio: 2-channel Linear-PCM; 32/44.1/48 kHz sampling frequency; 16/20/24 bits per sample"
Broadcast TV doesn't use that format and I don't know if the 4670 can transcode audio. It always seemed strange to me that a TV that can obviously support broadcast audio doesn't support it on its HDMI inputs, but your TV is not the only one.
The 4670 cannot transcode/decode Dolby to PCM (which is all your TV supports) since it lacks a Dolby decoder.
If you want to continue using that TV you either need to get/use a RokuOS player model with a Dolby decoder (newer Ultras: 4800/4802/4850 - not the 4801) or you need to disable AC3/5.1 passthrough in your HDHR settings (Stereo/PCM output only).
