I'll second navidrome -- moved to this after airsonic seemingly slowed down/stopped development. I'm using DSub on my android phone to get a nice mobile player

I'll second navidrome -- moved to this after airsonic seemingly slowed down/stopped development. I'm using DSub on my android phone to get a nice mobile player, which also sync's tracks locally to the phone if I wander into an area with low or no signal. Navidrome being compatible with the Subsonic API means there are several players on all platforms that can hook into it.