Amazon s3 script/html

This is a rush project. We're launching an information product on August 27. We have given out links to joint venture associates to see a preview of the project. Within hours...the links were all over the web. We need a better way to protect our intellectual property. The info product is made up of videos and pdf's stored on amazon's s3 service. We are unfamiliar with how to use their security to best protect our material. We have a page(s) that allow streaming video and downloading of the material for buyers. We want to use S3's ACL to help us protect this data, so we need scripts/html to handle the streaming and the downloading etc.