I have 49 gb of music and at the moment i just sync it between my devices with syncthing. But i think it will be better if i stream it, as the storage on my phone is limited.
Which streaming server do you recommend?
I saw nextcloud music, but i have the feeling it’s half backed and it will just clog my nextcloud install. Or supysonic? Ampache?
I also have a jellyfin server but last time i tried it (2 years ago) it didn’t seem optimized for audio libraries - using it only for video
not optimized in what way?
If you mean the official phone app, consider one of the third party music-only apps like finamp.