Flex MXML Componenet in Flash CS4?

Hey there Flash Experts! I’ve got a question…

Does anyone know of the best way to use a Flex Component (i.e. ComboBox, TextArea, RichTextEditor) inside a Flash CS4 project?

I’ve found an example of creating a “Flex Library Project” and using the swc file in Flash:
http://www.webkitchen.be/2009/03/09/video-tutorial-use-flex-for-your-actionscript-coding-for-flash-cs4/

This works, but, what I really need is to be able to use the RichTextEditor in my fla file. Can anyone help?

Thanks.