Remember a few years back when Microsoft launched a new type of DRM under the name "PlaysForSure"? The idea was to create a standard DRM that a bunch of different online music download stores could use, and which makers of digital music devices could build for. Except... like any DRM, it had its problems. And, like any DRM, its real purpose was to take away features, not add them, making all of the content hindered by it less valuable. Yet, because Microsoft was behind it, many people assumed that at least Microsoft would keep supporting it. Well, you've now learned...