OP here. I am only using Jellyfin only for videos, and for that, Fermata is actually a pretty good app to let you access Jellyfin via Android Auto to watch videos.
I am pretty sure Jellyfin AA works as it should (for audio only, which I did not know about) otherwise there would have been lots of posts on Reddit prior to the exodus…
Docker container running on a Synology. Version 10.8.10.
A stream without username/password (e.g. those in https://github.com/iptv-org/iptv) work just fine. Just this stream I encountered that contains a username/password doesn’t. And like I stated in OP the stream itself probably isn’t the problem, as KODI can play and list all the channels within just fine.
I prefer to use Jellyfin because it transcodes even these live TV streams for my mobile devices when reception isn’t that good.
Oh that would explain it then. I use Jellyfin only for videos, it has zero music content as of now.
Maybe I will try adding a music file or two to see if the mp3’s will show up.
Because I have no audio content in my Jellyfin server.