@jlo2: That's great that you're building an app around Channel 9 content, we'd love to hear about it once you're done.
We do have another API that we use for our Windows 8 app as well as the newly built (but not yet released) Xbox One app and that is our oData API. I would consider it still in beta but we are betting on it, using it ourselves and improving it all the time. It doesn't quite support all of the oData functionality that you might be expecting. Part of that is intentional, part of that is that we just haven't needed it yet so feel free to let us know if there is something you would like to do or think you ought to be able to do and can't.
Here is a quick run down of some common queries you might need:
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