In just a few clicks in the Adobe Analytics Extension in Adobe Launch, you can start tracking download links on your site (links that download non-browser files on your machine). This video shows you how to set it up.
Whether it be whitepapers, manuals, audio or video files, or a host of other possibilities, you may have links on your site to download files that don't open in a browser. At the very least, even if they do open in a browser (like a text file), you cannot have Analytics code on the page for tracking. Therefore, you need to track the link to the download file.