Late last week, a new version of the Silverlight Media Framework was released to developers.
The Silverlight Media Framework is a set of utilities designed to allow developers to deploy “robust, scalable and customisable” media players that work with IIS’ Smooth Streaming capability. It uses the Smoot Streaming Client from IIS as a base, adding a wide range of features for developers to use. These include an extensibility API permitting the creation of plugins for the framework, as well as other utilities to make developers lives easier.
You can download the Silverlight Media Framework binaries and source code from Codeplex, or just the IIS Smooth Streaming Client from IIS.net . You can also find out more about the release on their project page. Finally there is loads of information on Windows Phone 7 development and developer tools available on Developer Fusion.