First of all, many thanks to Lars who highlight me about static download link. Yes, Internet user might abuse this one. Your own files are only for your own website.
Script will provides unique links for the download urls every time Internet user visit your website. If you upgrade from previous version please backup involved tables (prefix_risfiles and prefix_rissettings) in case you want to keep the data. The scripts will drop these two tables.
Kindly share your idea or comment regarding this script.
Thanks & Regards.