I have had success with divx/avi & mov, but when I tried FLV I get the viewer in FireFox but the mouse pointer does not change pointers when you hover and click (like it does in IE) and it won't play (like it does in IE).  It does not initiate the download since you can't hit play.

If you turn on "autoplay" in the main configure section it will play in FireFox, but I have some pages that have more then one video and do not want them all to fire at once.

Also, if you turn on "autoplay" you can not pause it in FireFox...

I guess the "real" problem is that you can't change any of the controls (volume, play, pause, slide-bar) inside of FireFox.  Could this be a "css" problem with the template? 

Sample of behavior:
chaimonice.com/joomla/index.php?option=com_content&task=blogsection&id=1&Itemid=9

Update: I is something to do with the template by siteground

www.siteground.com/joomla-hosting/joomla-templates.htm

I used the "tropics" template and modified the banner image.

I changed it to another to "Deal-times" to test if it could be something with the templates and I could turn on and off the videos just fine.  Where do I begin looking in the CSS to find the problem ???  Any ideas?  Please  :'(