If you are like me, and enjoy having album art for all your digital music, but you are tired of either scanning in the art yourself or searching for it on google.
Try out this nifty Open-Source application Album Art Downloader. It uses a list of extensive databases to find the correct album art you need to complete your digital collection. It even integrates with your foobar2000 playlists, so you don't have to manually put the album art in the album folders.
Hope this helps!