i highly recommend astro file manager; you can move files around and open them too, among many other things that you can do on windows explorer on your computer astro file manager will do for your phone

 

You are confused. You're not looking for app to "use on pics and videos" but you are looking for a file manager. Mediascape is not a file manager, it's a full-featured media center.

Mediascape is great, far ahead of anything on Android - it's just you're clueless about what it's for...