whoops -- bad variable declaration
some first cuts at a playback controller and some styling to give the UI a flat look
fix for non-ascii characters in filenames while exporting (need to encode to utf-8)
UI improvements for the playback controls
 - real-time playback controls

 - select all option

 - allow dragging tracks from playlist table onto a playlist to add tracks from one playlist to another

 - improved sorting in tables:
     - sort by artist, album, and song name ignore leading articles a, an, the
     - sort by artist now subsorts by album and track number (or songid if track number is not available)
     - sort by album now subsorts by track number (or songid if track number is not available)