Hey Folks,

I've got a friend who's a documentary writer/director and he wants to sell one of his films online, through his website. He created site using Joomla, and has added PayPal to process the payments.

He's idea is to sell the film in sections, by subscription, and would like to allow the buyer to download the section of the film he's purchased as a download sent via an email, and of course will want this link to be temporary and not reusable.

Aside from the know how, what will he need from a programming or back-end point of view to accomplish this?