I’d need to do that too:
– a customer buy the video
– he’s subscribed into emember + he receives a secret link to the video.
I want him to display the video at any time without expiration (or a big one, one year)
But I don’t want the other member, even with the same privilege level (premium for instance), can watch the video if they bought another one.
Each one of them can only view their video.
So I guess I have to tweak it with estore only? not emember ..?!
right?
any ideas would be welcome 
all the best,
ju