flv not showing in firefox, JCE Media Manager

I'm inserting flvs into my joomla sites using JCE Media Manager. The dimensions of the flv don't load unless I manually enter them and the flvs don't show up on the front end page in my firefox browser on my powermac pro. In firefox on a mac, scroll to the bottom of this page:Title http://www.santafewebdesign.net/web-marketing-workshops-in-santa-fe-nm.html Does the movie show up for you? It's fine in safari or on a PC in IE or firefox. Any thoughts? I've tried making changes to the options, the menu, the alignment, the margins, etc. I recreated new flvs with different settings and uploaded them to no avail.

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