I need a store setup on wordpress that is close to the iTunes like store setup. The goal is to make the purchase of video training files as easy as possible. Preferrable 1 click purchase or the option to deposit money via paypal into website store which can then be used for 1 click purchases of video tutorials. Clients should be able to see outline of courses that are available for purchases and perhaps be able to get a free 15 second preview. Also interested in a delivery format for videos with drm.