Basic EmbedPlayerSilverlight and working playback for Silverlight

* Simple silverlight player bridge example, 
* Adds EmbedPlayerSilverlight module hosing all player logic. 

Shows basic Microsoft reference DRM urls.

* some whitespace fixes
* fixed flash call to local method without this prefix. 
* all silverlight is documented here;
http://msdn.microsoft.com/en-us/library/System.Windows.Controls.MediaElement(v=vs.95).aspx