Next Post Button by name?

I need a next & previous post button which goes by name. It also has to be the next/previous post in the specified category.

My current code for ‘Next Episode’ look like this:
<?php next_post_link('%link', 'Next Episode', TRUE, '3'); ?>

This one works fine. But I have to post all ‘episodes’ in the right order for it to use the next and previous buttons the way they’re supposed to be.

So what I basically want is that the next-previous episode buttons work by title and not by date.

Thanks.