MPD being Music Player Daemon on linux. It's bloody good isn't it?
I'd only really been using it as part of Volumio on an RPi but today I was messing with an old phone (HTC Sensation) to try and use it as some sort of music remote/player in the kitchen.
After trying various things I ended up installing CyanogenMod 12.1,
aMPD and mounting my music network share.
aMPD is an MPD server for Android. Phone is hooked up to an amp+speakers, plugged in and hidden away.
Controlled via MPDroid on another phone or with any MPC software on a computer.
Seems like a decent way to repurpose an old Android phone currently sitting in a drawer gathering dust.