PayPal Script for multiple after-payment URLS

I would like a way to sell multiple products for instant download via paypal such as ebooks and software. However, they have changed the way paypal works to only allow 1 download url. I would like some sort of database program that I can install on 1 webserver so that I can sell multiple products with multiple download urls and have the buyer redirected to download their product immediately after payment. The coder should have some grasp of this issue and what I'm trying to accomplish. Am open to suggestions on how to make this work. ## Deliverables working script easy formula for installing on any site ## Platform unix/linux webserver mysql