I updated my Rdio workflow to fix a few things.
1. Resized png icons and optimized (download is now ~210k, was over 2MB)
2. Fixed the Artist items not playing. Selecting an artist will now play their Top Tracks Channel.
3. Migrated to Workflows helper class
4. Added track count to Artist results
5. Increased performance of Now Playing item by limiting the number of Applescript calls made.