Alternatively, you could use Navidrome.

I use that because it’s natively available in Termux. Yes, Android terminal emulator. My music is on the SD card and I can share it to other devices using Navidrome on LAN. Since I also do this on school network, I put NGINX in front of it for HTTPS… and also because I don’t want to have each thing on separate ports.

I have also got Jellyfin to work once in proot-distro, but I couldn’t reproduce it the last time.