Is it something like our beta test of
http://download.ten.com/ ?
A user browses through some videos, downloads it and before he plays it must first purchase it through the actual video player ? The video file is DRM encoded to expire in a month and all you'd need to do is pass an affiliate code through the join form. Not too difficult.
Your idea just takes it to the next step and lets anyone link to those videos, right ? Or am I off base?