Safari plug-in for Mime content

I got the following error message while trying to access the indicated website:

The page “VASIMR Technology page” has content of MIME type “application/x-oleobject”. Because you don’t have a plug-in installed for this MIME type, this content can’t be displayed.

http://www.adastrarocket.com/Technology.html

What plug-in do I need? FreeWRL-1.21.2UB.dmg didn't work.