Users can listen to their existing Pandora stations. Users can skip tracks they don't like. Thumbs up / Thumbs down is currently not supported. If elements can be added somehow to the GUI, this may change in the future. Cover art and song information is displayed in the playback window.
The code is currently available here. Instructions for installation are on that page.
A pull request has been made and has been awaiting approval for a few months now. I think it's ready for production, but of course that's not up to me.
The plugin is powered by the Anesidora Node JS library (uses the Unofficial Pandora API).
@lostmyshape helped me with coding suggestions, and @srhamil added a fix that helps with an intermittent connectivity issue.
You can reach me here on the forum, my username is truckershitch. All messages are welcome. I will try to answer them in a timely fashion. For some reason, I do not get instant notifications when I get a message or on the forums, so I have to check manually.