Well, just when I felt that I was (sorta) starting to understand things, a new mystery pops up. What I thought
I finally understood is that even though my TV can decode AAC5.1 and AC3 from the antenna, for some reason it just wasn't designed to decode anything coming in over HDMI; and
my old Roku can't decode much of anything either, basically just MP3 and AAC2.0, so there you are.
But this evening while watching Netflix on my Roku, I finally happened to pay attention to the technical details of a video, which said that is has 5.1 audio. Whaaa
The Roku can't decode any 5.1 audio, and my understanding was that the TV also won't decode any 5.1 that it gets over HDMI ... so how am I able to hear audio through my TV's speakers? Has the Netflix app detected this and switched over to give me an MP3 or AAC2.0 audio stream?