A few weeks ago, Windows Phone and Silverlight developer Justin Angel (see site) made a proof-of-concept app for Pandora Radio--the famed music streaming randomizing service--on Windows Phone. We gave it a spin and due to its popularity, Justin agreed to not only make the app, but make an SDK for developers. The latter would allow others to make 3rd party Pandora apps for the platform as Justin laid out the instructions for the backend/streaming part.
Now, the Metro Pandora SDK is finished and available for others to go take a gander at. We could imagine all sorts of cool applications of this, including other media streaming apps incorporating Pandora as a "feed". And now that the groundwork is laid out, Justin can presumably start working on the app itself, which we imagine will raise a few eyebrows at Pandora. Of course if the Marketplace rejects or pulls it, like Cracked Reader, there is always the burgeoning Homebrew scene which will gladly take it.