Just added a Raspbian apt repository to expose backported build for the latest MPD version

Configuration

Here is a config for your raspberry:

# Drop this line in /etc/apt/sources.list.d/deb.kaliko.me.list
deb http://deb.kaliko.me/raspbian-backports/ stable-backports main

You can then install a recent MPD running:
apt install mpd/stable-backports

Happy listening