Pretty simple "fix" (more of a hack I guess) for Issue 2033 "MediaPlayer...

... setup doesn't include mp4 support", basically uses the existing audio playing code in Sound.java and detects if an .mp4 is being played, if so, it connects the mediaplayer to a surfaceview so it can display the video.  Sets a timer to hide the surfaceview half a second longer that the duration of the video.  This code works on a Nexus 7 running Android 4.4.2, viewing the ASL Browser cards from the shared decks.