This preliminary release works with WP71. You should be able to recompile the same code for desktop use merely by retargeting the assembly. In a later release this will probably be provided as a distinct project within the solution.
The zip file contains a solution that includes the WP71 implementation of Cerulean, and a test application that writes a file onto a non-existent path (implicitly creating all the required folders), reads the content of the file and then deletes it. The app UI does nothing, watch the Visual Studio output pane to see progress messages.
You must edit the test application to supply your own Windows Live credentials.