Hi Larry,
Unfortuanately embedding media in vBulletin isn't quite as straight forward as a normal html page. It's kind of a hack that I had to apply. It should work in Firefox, it does on the version I have anyway, but I will try just adding the embed tag over on my testing server and see if it doesn't break things... if you have any experience in embedding media in vBulletin, I'd be very happy to hear from you. Just PM me any time.
Thanks for taking the time to post this.
Clancy
"I like work: it fascinates me. I can sit and look at it for hours". Jerome K. Jerome