sgMotion is an animation library (based on XNAnimation by Bruno Evangelista) and provides full integration with both the Sunburn Engine and the Sunburn Framework. The project is available for download on Codeplex:
The library source + Sunburn sample code is provided to get you started! Current release supports Sunburn 1.3.x for both PC & Xbox. For the older 1.2.x release click here.
Note: The previous releases will be maintained for some time using my Dropbox public space. For new releases check out the Codeplex page above.