ok, figured it out. Its a combination. First Firefox wasn't even playing the advert. So i used a program called IE Tabs that allows FireFox to play IE content on web pages. This played the advert, but like Chelle, the video would not load.
So I disabled my Firewall, and the video played just fine.. Of course, I in no way intend to disable my firewall just to view a vid on Vidmax, but at least my mind is at ease that I can play the vids there should I so desire
So to recap: To view Content on VidMax, first use either Internet Explorer, or IE Tabs for Firefox AND disable your firewall.