I was struggling with this for a bit. But luckily there is a quick work around. It seems the scope is lost for the event listener when using flash.system.File browseForOpen(), i.e. your handler will never know when a file is selected. The solution is to move the variable outside of the function - create an instance variable of File.

Read this thread for more info:
http://www.adobe.com/cfusion/webforums/forum/messageview.cfm?catid=641&threadid=1275

I always thought that the best way to learn is through an actual project. My computer is full of unfinished projects although now and again some evolve into something more meaningful. Now it's time to start filling up that hardrive full of AIR goodness. Enter FLVPlayer.