Final lyric double underline/Ogg Vorbis switch

Fixed last lyric double underline issue.

Switched to Vorbis as default format.  I'm not sure what's wrong with
many mp3s I've tried in this system.  Some just act buggy, either not
playing or playing out-of-sync.  I've been using VLC to re-encode them
as MP3s, but then I thought better of it and just re-encoded everything
at 320 Ogg Vorbis.  It seems to have fixed the problem.  Not sure if VLC
just has really un-buggy encoder but I figure Vorbis has better platform
support anyway, so just use that.  I may be wrong about all of this, I
just have no idea why some mp3s act buggy while others don't.