When I implement in my usercontrol from your demo:
<telerik:RadMediaPlayer RenderMode="Lightweight" ID="RadMediaPlayerFake" runat="server">
<PlaylistSettings YouTubePlaylist="PLvmaC-XMqeBb991YNEWAHYL9ZJAeURr-r" Mode="Buttons" ButtonsTrigger="MouseDown" />
</telerik:RadMediaPlayer>
The app responses with:
The remote server returned an error: (410) Gone.
What could be causing this? The channel id is OK...
Marc