Why Does Handbrake Open iTunes When I Try To Download It?

Ive had trouble with the version 0.9.3 of Handbrake, so I tryed to download 0.9.1. When I press download a box pops up and it downloads fine. Then a alert box pops up asking me for permission to open iTunes, so I clicked “allow”. iTunes opens up and nothing happens. Why in the hell would Handbrake open iTunes?? Also I tryed downloading it again and pressed “dont allow” when it asked to open iTunes to see if it would continue downloading but nothing happens either. How do I succesfully download Handbrake 0.9.1???