Home page slider images

Hi, I am currently using the Rock Star theme free template to re-build a family members website. I must say it is a fantastic template. I want to change the home page slider images (the default is a person playing guitar and a close up of the guitar neck). How can I change those images OR can these only be changed in the upgraded PRO version. I can change the image on the other pages with no issues but I cannot see how to change the main slider images. Secondly are the SEO features more superior in the PRO version of the same for both the free and PRO versions. I am also looking to upgrade to PRO if it has the features I need. Thanks in advance. Regards, Anthony