MediaSource provides access to the source or sources from which the media will be read. On Windows Phone, the only available MediaSource is the local device. Windows Media Connect is software that lets you connect your Windows Phone to a computer running Microsoft Windows.
Capabilities for Windows Phone
If you use this API in your Windows Phone app, you must specify the following capabilities in the app manifest. Otherwise, your app might not work correctly or it might exit unexpectedly.
|ID_CAP_MEDIALIB_PLAYBACK||Windows Phone 8|
|ID_CAP_MEDIALIB||Windows Phone OS 7.1|
For more info, see App capabilities and hardware requirements for Windows Phone.