Movie folder protection

Hi, I have a movie site. The movie site use the script PHP Melody. In the script poeple can find my movie folder and download our movie. I would like you to find a way to protect this folder. One particuliar site is stealing our movie to put them for free and we would like to stop that. Poeple pay to see our movie on our website. We would like an optimal protection witch we think it need to be protected by HTACCESS. Give us your advice, will anwser all your question, Alain