Redirect of unregistered users

Hi,

if a not registered user try to download a file, i’d like him to be redirected to the new user page (example: http://www.mysite.com/wp-login.php?action=register). Is there any way to change this?
Right now, if someone not registered try to download a file, the system just let him know that only registered user can do that, but doesn’t help him to understand how to register himself.

I hope i’ve been clear 😀

Thanks

https://wordpress.org/plugins/download-monitor/