Help with WMP and MIME file?

[Jedi5]

Trying to listen to some online radio on WMP.
I get prompted to install Microsoft Silverlight which I do.
I've also installed Flip4Mac, the latest version.

I try again to listen to the radio station and I get prompted that I am missing a file:

"This page has content of MIME type “application/x-mplayer2”, but you don’t have a plug-in for"

Did I do something wrong on my install?
Where I get this missing file from?

Thanks all!