Fix minor error in fppxml that caused universe updates to be broken for me.
Update media code to parse the details of media

* Use TagLib's c-bindings to grab as much information as we easily can.
  It should support mp3/ogg that we currently support and give us pretty
  much everything we'll want in our MediaCallbacks.

* Requires taglib to be on the system.  For a Pi, you'll need to run:
	sudo apt-get install libtagc0-dev

* Currently only added "title" and "artist" to the MediaCallback
  function.  We can pass more and let the plugins sort out how much
  information they want to use.