The "Content Library" of Digital Downloads Pro is where all of the digital content that you would like delivered to customers is stored. There are three types of digital content: Files, License keys, and Custom links.
The same digital content can be added to multiple different digital products. This helps you save storage space, as well as makes management easier.
You can create and upload your digital content in the Content Library before creating digital products. Any content you create or upload while creating a digital product will also show up in your Content Library.