When there is a problem that is this generic, it is extremely important to list what computer you have, its hardware list, version and name of the OS, version of browser, screen grabs of your list of plugins(browser), screen grab of any error messages and I am betting I forgot something.
Thanks for trying to be helpful. At the moment I am still analizing what is going on with my computer. I just thought sombody could come up with a answer to a known problem.
First the video would not play in Fire Fox, but switching to IE9, I could play it. Now the problem migrated to IE and it want play there either. I have a Laptop connected to my network, and everything works just fine with it. On both computers Norton Internet Security is set up the same way, disabeling it did not solve the problem either. All suggested remedies so far have not worked.
Flash Player Settings: "Allow Third-Party Flash Content To Store Data On Your Computer."
A scary wording; had it turned off. Wy have someone store data on my computer?
Well, turned it on again, now it works!