Play a video
You can play videos from your apps using the
MediaPlayerLauncher. In this example, we have added them in a Video folder inside our Widget. After that, you need to call from your Javascript the next function:
window.external.Notify("PlayVideo('./Widget/Video/yourVideoFile.wmv)");
You can use the different codecs supported on Windows Phone 7 ->
http://msdn.microsoft.com/en-us/library/ff462087(VS.92).aspx