Adding latest posts to slider by default

Hi
Help me to add the latest posts on my blog to the slider by default. At present, there’s a meta box on post edit page where you tick & that post is added to slider. But i want every new post to automatically feature on the slider. I want 4 posts on it too.

I’ve downloaded & tried this theme, & its awesome except that i miss this simple feature that is in the other themes.
I want to automatically feature 4 recent posts in the silder.