My site is down (my host is moving it but it is taking longer than I'd like), but there are apps that can provide what i think is the behavior you want.
My Subfire suite has that ability - two devices logged in as the same user and one of them can enable a remote control listener (you can name it to identify it from other boxes). Then the other box can surf around the collection to find the folder, artist/album, or playlist (or other features of the system like "shuffle songs from artists like <name>" (which uses last.fm to link artists within your collection together). I initially set it up so that you could remote-control your FireTV instance from a tablet. This comes with the version 2 of the apps and above (except Subfire-PL, the playlist editor).
https://subfiresuite.com/ when it is up, hopefully in a few hours tops. (been down all day :/ )
Note since it is an app, you need a license for subsonic.
All SubFire apps are web based (though packaged for FireTV) and free. Subfire 2 and above are all Progressive Web Apps.