Songbird 0.7 RC2

Here are the most noteworthy features we'd like to call out in RC2 and get your feedback on:

* Smart Playlists: Create playlists that automatically update based on criteria you set.
* Album Art: Read, write and display album artwork. Theres a new Album Art Display Pane in the bottom of the Service Pane that shows the artwork associated with currently playing track. In the Metadata Editor, you can add, remove, cut, copy and paste artwork to a track - changes will be saved to the file(s) you edit.