D the media source file
    				is downloaded. For details, see <a href="#SL24"></a>. </p>
      <p>At any given time, a Silverlight MediaElement is associated
    				with exactly one media source as specified by the Source property
    				URI value. That source might be audio-only, or audio-video. The <a href="https://msdn.microsoft.com/en-us/library/system.windows.controls.mediaelement.volume%28VS.95%29.aspx">Volume</a> property
    				of MediaElement affects the audio playback volume
    				of that p