I use mine as a dedicated Musicbox  ->   http://www.pimusicbox.com/You can also use the HDMI from the Pi, but I could not get a stable connection on my Denon amp.The top of this case is compatible with the bottom of this one:https://www.youmagine.com/designs/raspberry-pi-2-case-with-mounting-bracketWhich is based on this one:http://www.thingiverse.com/thing:922740