Emby Theater for Linux
https://emby.media/download.html
Auto-Start
Locate the autostart file:
~/.config/lxsession/LXDE-pi/autostart
If LXDE-pi is missing then copy it from:
/etc/xdg/lxsession/
Add this line to the end of the autostart file:
@emby-theater
Just a quick shout out for support but Emby Theatre on Linux Mint seems to be a little slow when loading music IE i select a song and about 5/10/15/20 seconds later it will start the song. Also when i do the following and go to shut down from the menu i get the following error. Exiting, signing out etc seems to work fine though just shutdown that's the issue.