OK, here is what I need and I just can't seem to find it on the net so maybe someone knows where I can get it. I expect to pay for it so I'm not looking for a freebie. I need software which will provide a unique download link to a given e-product. The software should have a time limit for the availability of the download and the download link should be a one-time link and expire permanently at the time of the download to prevent mass downloading by people who have not paid for it. I suppose that I am using the wrong keywords to search for the software and such software may be contained in a shopping cart for all I know. Any thoughts or referrals? Thanks. Uptowwn.