"The QuickTime Plug-in requires the QuickTime System extension version 5 or later. QuickTime is available from [url="http://www.apple.com/quicktime/download/""]http://www.apple.com/quicktime/download/"[/url]
So I go to that site, make sure I have the latest QuickTime software, and then try again. It gives me the exact same message. My solution to the problem was to use IE, which has WMP as the default media player instead of QuickTime, and such things work perfectly. So my question is... is there a way to either make QuickTime work properly, or even better, make Firefox use WMP (or something else) as its default media player?