Create a Drupal Website with Ecommerce

Integrate Drupal 7 and either ubercart or drupal commerce with Epoch ([login to view URL]). Once integrated I will need the ability to add videos (products) that once purchased by a user, that user will then have full access to it forever. The idea would be to have a library that users can browse through but only when they make a purchase will they get full access to that node/product so that they can then either download the movie and or stream it.