I needed a cheap, DRM-free digital download store so I wrote this quickly over a few days. Then I thought it'd be useful for other artists. It was created to sell music but any files will work. Authors, photographers and artists could use it as well.

Some of the store's features:

• Uses Amazon S3 for cheap and reliable bandwidth. $0.15 per GB-Month storage used and $0.20 per GB of data transferred. (now optional)
• Uses the Paypal shopping cart for a reliable experience.
• Buyers receive instant access to the files.
• Expiring URLs for your digital content.
• Quick links instead of requiring lengthy Paypal FORM buttons.
• Tracking in a MySQL database
• Quick handling of eCheck approval
• Thumbnails (optionally hyperlinked)
• Open source and totally free

Requirements

• A web host with MySQL and PHP 4 or greater
• An Amazon S3 account (http://aws.amazon.com/s3/)
• A Paypal account (http://www.paypal.com/)