GrooveWalrus 0.308 is out, fixes (hopefully) the major problems I created in 0.305. More details later.

- Changed handling of flash songs.
- Updated GS version, added some more parameters.
- Added another check to local_songs.py.
- Cleaned up the Flash plug-in so it works again, Dizzler and Jiwa will not however work atm.
- Set explicit size for Song Details window.
- Fixed GS country codes.
- Checked for cached file before starting, helps if you have cached files but no internet connection.
- Fixed some threads so they actually work.
- Fixed up song_id/track_id/music_id problems.
- Fixed error when setting record directory with funky chars.
- Fixed loading error when no playlist exists.