Did a semi-major clean-up job on some important stuff, let me know if things are busted. Here's the changes in 0.303 and 0.304:

- Layout change, added Quick-Save and a new listcrtl for previewing saved playlists.
- Added Ctrl-W, quick-saves playlist to database.
- Saving, (Ctrl-S) now prompts you for a name to save the playlist as.
- Right-clicking on the saved playlists tree now displays a menu with Delete, Load, and Properties options.
- Double-clicking on a playlist from the playlist tree, loads it on to you main playlist.
- Clicking on a playlist from the playlist tree displays it on the preview table.
- Fixed pre-fetching, songs should once again pre-fetch if you have that option enabled.
- A few minor fixes to the Lyrics plug-in.
- Added threading to Lyrics plug-in, unmuddled the code slightly.
- Updated Lyrics plug-in for new CurrentSong class.
- Updated prefetch.py for new CurrentSong class.
- Fixed sorting by folders on Song Collection tab.
- Updated playback_panel.py for new CurrentSong class.
- Overhauled the PlaySong method, created CurrentSong class, things will work a little better, and you should hopefully be able to play local music without an internet connection now.
- Updated ratings_button.py for CurrentSong class.
- Updated favorites_tab.py for CurrentSong class.
- Added 'sorting arrows' on the Favorites tab.
- Added exception handling for the lyrics website in the Lyrics plug-in.
- Updated zongdora.py for CurrentSong class.
- Updated layout to include song cache options.
- Added ability to set the size of the local song cache, on the Options > Music Stream tab.
- Added pubsub message after 45 seconds of playback, will use for autoplay.
- Changed reading of the main playlist to use beautifulsoup.py, hopefully will eliminate startup errors.
- Made deleting of local cached files a little safer.
- Updated lyrics.py to use a more generic pubsub setup.
- Partially updated twitter and zongdora plug-in with minor fixes.