Music player on FreedomBox


Does anybody has installed mopidy/mpd or another music player on FreedomBox? Since my FreedomBoxes are close to my amplifier it does make more sense to connect the music server directly instead of using MiniDLNA (stream the music via WLAN from FB and send it to the stereo via bluetooth). I have an external usb soundcard laying around and so it would make more sense, to directly connect my FreeedomBox with the amplifier.
I did download mopidy and failed to successfully install and configure the music server. Do I need to install alsa, phyton, etc?