Keeping Store Downloadable Products Secured


I sell only downloadable products, which are vulnerable to "free" download if not in a secured location to ensure that they can only be accessed after completing payment. I am concerned that the product upload link uploads the product to the image/gallery manager. I'd like to upload them to a secure folder under my root and provide that link instead (redirect to specific product download) after purchase is completed. Is there a way to do this with MarketPress?

Thanks for your prompt reply.