Ah, I can’t speak Symfonium’s WebDAV or SMB handling. My music server runs Navidrome that uses the subsonic api. All I have to do is point my music player at my url and I can sync favorites and listen counts across everything, it’s pretty great.

Not FOSS but I use Symfonium to stream music from my Navidrome instance on my NAS while I’m out of the house.

Edit, saw your last comment. What couldn’t you get working?