I followed your link. It's nothing different than I've seen before.
My host, who I trust, was not able to make .htaccess file stop people from saving as the files.
I have searched and searched for a way to do this with .htaccess .. And that's how I found antihotlinking.com
If I am indeed wrong, and it can be done.. I'm interested to know precisely how. Everything I've tried using .htaccess has failed.