Based on current rules of engagement,
Live YouTuber can stream live YouTube
videos through ExoPlayer.  ExoPlayer
cannot play video files.

Find the ID of the video you want to
stream.  
Key it into the edit area at the top of the 
screen.  
Tap the return key. Your live stream (if 
available) should begin to play shortly 
thereafter.

Full disclosure:
The file containing data you need to
locate the stream's .m3u8 playlist, as
well as the .m3u8 file itself can be
found in your GetSafeDirDefaultExternal
named after the video ID.

Note: screen rotation not implemented
with this release.