I enjoy integrating Pandora into my music rotation along with my iTunes library and Spotify, but doing so on the desktop either means keeping another web browser window up or downloading Pandora's desktop client for OS X. Pandoras Box does a good job in condensing the service down to a menu bar app, but there are a few caveats.
Pandoras Box is a recent arrival to the Mac App Store, but the first version turned away many potential users by r