Use woocommerce upload for downloadable products

When I upload downloadable files from the user front end form for woocommerce products, they go into the wp-content/uploads/ folder along with images. How can I change this so they use the woocommerce downloadable upload function. This will ensure that the downloads are not easily accessed by anyone with a link and are placed in the woocoomerce/uploads directory instead. I basically just need the files to processed through the woocommerce functionality.