Can you tell me how to add video (flv or other video type) to Dreamweaver mx? please
What I'd do: embed the HTML code from youtube into my dreamweaver template (I use dreamweaver to build pages too when I'm building one) and then that way you can embed the flv file into your page before you upload, preview, and test locally. The youtube thing is a good idea though as it'll get more exposure for the video, and it's easy to copy / paste their embed code into a regular page.
Oh, you want to add flash videos? Well you can drop it onto youtube and call up the html to save bandwidth or put a flash player onto your site using the stuff you get with dreamweaver.