Sorry to hear that; have you checked your registry settings? I probably still don't have the Anniversary update, so everything's still working on mine as of a couple days ago. Note: I still can't play in Zune, unless I download the track first.
Can you roll back the update through a system restore, or do you prefer to keep marching ahead with updates for security or other reasons, or because it can't easily be prevented? Perhaps I've turned them off on my machine, but as I recall it took a little extra work.