Okay, you should update to this version. If you have version 0.217 you can try to use the actual in-program updater (I tested on Windows 7 and it seems to work), hopefully it'll work for you too. Windows XP users that use the updater might want to run GrooveWalrus in administrator mode first because I have no idea what might happen. Otherwise the usual .zip and setup.exe versions are available.
Also, if you want to clean out your image folder, album covers and biography pics are stored differently now (and will be re-saved in that folder).
XP
C:\Documents and Settings\[username]\Program data\GrooveWalrus\images
Win 7
C:\Users\[username]\AppData\Roaming\GrooveWalrus\images

- Added double-click to hide album cover on the Album Viewer
- Ctrl-A on List Sifter, Favorites, LastFm, My LastFm, Playlist, Album list controls selects all
- Ctrl-C on List Sifter, Favorites, LastFm, My LastFm, Playlist, Album list controls copies selected to playlist
- Fixed loading .xspf, .m3u, and probably Song Sender loading bug
- Changed cover and bio picture storage to hopefully not download more than necessary
- Fixed the horrible bug that caused songs not to play when Grooveshark didn't return an exact match
- Copy and Paste (crtl-c, ctrl-v) to the playlist should work from most list controls now. Pasting will automatically paste to playlist, whether that is displayed or not