I seem to be missing a video plug in for firefox, as whenever I go to pages such as this, I get a message saying that additional plug-ins are required to view all the media on this page. So I "click here to install the plug-in" and it says that no suitable plug-ins were found, and the following information:"Unknown Plugin (application/x-mplayer2)" and a button for a manual install, which takes me to the Windows Media Player downlaod page. I have reinstalled Windows Media Player, but it doesn't help. Is it because I upgraded to WMP11? And should I just go back to WMP10?