In my opinion Flex and Flash focus on following standards whenever possible. This is one of the reasons you can use Flash or Flex as a presentation layer for almost anything. Flash-Lite has provided capabilities on devices, and Apollo will fill specialized usage on the desktop. These currently work with MS server side and client side technologies where ever there are standards in between. So why you WPFe. Is it more a matter for religion?Perhaps there is some advantage in the use of Windows Media Player Video. MS has some degree of Digital Rights Management. For some companies this is a perceived requirement. Many developers, and media pirates for that matter, will tell you DRM is a waste of time and money. Any solution can be defeated. By implementing DRM you make big corporations happy, mildly annoy media pirates, and really tick off consumers that feel their fair use rights are violated.I’m inclined to believe there is truth in both camps. My question is more along the lines of, how much security is too much. Clearly, upsetting the legit consumer is not the primary concern in every DRM solution. Although several times I have heard a non-technical users angrily identify Flash as the reason they could not store internet videos on their hard drive any more. I suppose from there perspective FLV is a form of DRM. Did that restriction save some companies money? Did it stop a large number of users from republishing FLVs?