This is now my go-to app on my Apple TV with my custom channels and now looking at my Plex library as well. I know I once saw a comment about channels with no audio playing being due to multi-channel (or multi-stream) audio in the broadcast? Could anyone explain that further? In looking at the streams' attributes, the audio portions seem the same as other functioning channels.
The m3u's play in my browser and in VLC just fine and with audio. Has there been a feature request to resolve this yet?
FWIW, I would also love the ability to read .srt subtitle files of a library item much like Plex can.