The Zune can only play Zune DRM files, and not the Plays for Sure DRM files. And it was intentional, not some minor oversight. Really doesn't help the DRM case at all...

One of the other odd aspects of the Zune to me is the lack of integration with the other media projects MS has these days. It doesn't sync using Media Player 11, it can't interact with the XBox Video Store (even though the Zune and the 360 both use "Microsoft Points" and the same accounts), and boxes on the shelf can't even be used under Vista. The Vista issue has been fixed, but an online update is required.

And of course there is the fake looking scroll wheel that everyone seems to want to try and turn when first using the device, only to find that it won't.