My recent improved flow is:

1. Put my new music in a ‘import’ folder
2. Run a beets container and tell it to import from the ‘import’ folder to my ‘music’ folder (beets tags all music with prompts before moving to my final music folder ofc).
3. Jellyfin (which already has a music library set up and pointing to my ‘music’ folder) automatically refreshes after a few seconds.
4. Listen and enjoy through jellyfin app/site OR through finamp (on android).

The best part is you can rip your music into the ‘import’ folder, or torrent, or get it direct from youtube. Thanks to the modularity provided with this setup, it doesn’t matter.