First, you should really not use the Redirection setting for a file download, as that exposes the "real" static URL of your file to the buyer, so they could share that with anyone else who would then be able to obtain your file without paying. Redirection is intended to redirect the buyer to the "secret" URL of a Web page where you may have some premium content displayed (such as a pay-per-view video).
You appear to be subscribed to our $18/mo plan already, which supports Remotely Hosted Downloads, so you would want to enable the Single File Download setting for each product (rather than Redirection) and click Next until you reach the screen where you can paste in your Remote Product File URL.
I infer the bonus file you want to offer concerns the 50-state question you posted separately, so I'll address that matter there.
