We've published two new WPD developer-centric whitepapers at the Microsoft WHDC website for WinHEC. The first covers how to do WMDRM metering and license synchronization from a WPD application; the second describes how to port the existing WPD "Hello World" sample driver to communicate with a Parallax...

Setting up your WPD application to handle protected WMDRM content The WPD API supports the transfer and licensing operations for Windows Media Digital Rights Management (WMDRM) content. This MSDN article describes two additional properties that are required to enable your WPD application to transfer...