As I was working on the technical working committee, I found it necessary to start prototyping a CME player and experimenting with building packages. Building technology while writing the spec helped us write a more complete and usable specification – and helped us find inconsistencies and problem areas early on – when they were easy to fix. The prototype evolved and I finally released it yesterday as a free Windows 8 App, Authentic.
The first version of this app plays back the CME Packages and shows packages in your My Music and SkyDrive as well as an Azure service. I am working on enabling authoring tools in the app to make it possible to create CME packages as well as Windows 8 apps that wrap those packages in future versions – so CME Packages could be sold as apps in the Windows Store.
Though the CME format was conceived of for music experiences, there is really nothing in it that precludes it from being used for any other type of publishing.