Grant acces to page after signing up for newsletter

I am building a WordPress site with a Flash ear-training application. The idea is, that people can use a limited version of the app, but they need to sign up for my newsletter, to gain access to a page containing the full version.

I have installed the “User Access Manager” plugin which lets me grant acces to specific pages for registered users. However, what I actually want is the users to sign up for a newsletter.

Is there any way to do this?

Any help is appreciated ??

– Morten