I have this problem with allvideo plugin and virtuemart. I managed to add videos into item description but when I click to view full size photo and the lightbox popup the video run over that photo.
I think the problem coz by z-index. Are there anyway to fix this problem? I've tried to search for this issue but got no luck. Everyone seem to have the same problem but no solution yet.
If anyone got a solution, please share!

Thank you.

My system ;
WAMP2.0h = Apache2.2.11 + PHP5.2.9-2 + MySQL5.1.33
Joomla 1.5.11 + Mynxx template (Rockettheme)
Virtuemart 1.1.3
plugin allvideo 2.5.4

Could you please provide a link to your site?

I'm sorry but my site still in developing process. As you can see I'm running it on WAMP. It's not online yet.
Anyway, do you have any ideas?