You can filter your XML data based on dates in ActionScript to limit results in a component's data provider to one that is relevant to the given task.
I spent half a day trying to figure out why a Flash project suddenly stopped honoring bgcolor and allowFullScreen in IE but not other browsers.
An Over-Abundance of Information in the Information Age
An essay on the trends on the Internet that cause an explosion of information that is often antithetical to the ideals of democracy and progress. This essay cautions parents, teachers and community leaders to be wary of every emerging media outlet.
Here is a solution to your problem if you are building an application in Flex 3 that uses the VideoDisplay component and the results fail to work in Internet Explorer and Chrome but mysteriously work in Firefox.