I have experimented with FinAmp, Jellyfin, Plexamp, and Symformium.
I really hate to say it, but Plexamp is the best out of all of them. The thing is, I wanted to ditch Plex because I do not like them anymore.
Can anyone recommend me a good free app for Android that can stream my music collection?
According to the dev, Play Services is only needed for casting:
“…you only need play services for Chromecast.” SOURCE, replying to a GrapheneOS user
He even offers an option to install without the play store (via Aurora) and to contact him for the license. SOURCE
Tnx!