Seems like this issue has been going on for years. I now have a 2021 roku ultra, and the same thing. No sound for many of these tv shows, etc.
How has this not been addressed yet? I bought this specifically hoping it would handle this 8 years later.
I suggest everyone give lower ratings where they bought it (amazon etc) until they finally take notice. Maybe if we vote with our dollars they will prioritize it.
@dborosev, good luck, but Roku has never shown much interest in the apparently very small segment of people that want to stream their own files. I sincerely doubt it's ever going to change.
I ended up finding a way around it, using PLEX. Works great, and I don't have to rely on Roku's bad audio support.
At least Roku supports the PLEX app.