not sure if this works in the free version (or still works anyway actually :)
But, that's my idea:
You can also show external urls in your slideshow by adding a custom field and name it “my_url” to your posts and adding your home url.
see demo page cc pro:
** As this is the slideshow, you can go and edit the post which is displaying the cloud image.. there, open the settings panel for custom fields (if not displayed, check the upper right corner for the button which says "Screen Options"..
Then add a custom field and procede like described above.
Should result in your first slideshow image (the clouds) linking to your homepage instead to the post..
Hope this helps, konrad