FileReference Load local files - how to use it to load flv or MP4 files?

I am trying to use the FileReference stuff to load flv and/ or mp4 files to Flash player.

I have been able to do it with images with Flex sdk 3.3 (Flash Player 10), doing something similar to what Peter shows at http://blog.flexexamples.com/2008/08/25/previewing-an-image-before-uploading-it-using-the-filereference-class-in-flash-player-10/#comment-19806

However, I cannot figure out how to load a video.

Any suggestions?