How do I enable air wallpaper as a dynamic screen saver on Mac?

Hey, does anyone know how can I enable this Air wallpaper as a screen saver dynamic wallpaper? It is named something like this: radial sky blue dynamic screen saver. (I saw this amazing Air dynamic animation in a official Apple store, but I do not have it on my mac :( - Is there a way to have this, or enable this dynamic wallpaper?). Have a great evening, and thanks for any info! :)

[Re-Titled by Moderator]