Why I can not see the video in thios web in firefox ATV?

Why I can not see the video in this web in firefox ATV?

http://extendedtv.ucoz.com/index.html

The web look ok but the video area is in gray… why? I need a plugin?

It requires Flash, so be sure you follow these instructions:

http://wiki.atvflash.com/index.php?title=Enable_Flash

You either need to be running 10.4.x on your Mac to get the CoreAudioKit file or need to have a 10.4.x CD/DVD to pull it from, the 10.5.x file will not work. If you can’t find that file then let me know I might be able to find one for you.

Can you test the link to see if it works for you in your ATV? I have already flash installed. Flash work fine courchsurfer and firefox but not in this link…

http://extendedtv.ucoz.com/index.html

THX