I am interested in a solution that can coordinate all my audio/video inputs/outputs throughout my apartment.
I currently have/am acquiring a macbook pro intel, time capsule, apple tv, and airport express w/speakers. It seems that I can get audio anywhere...

however...
I know this may sound strange...
but.. if I am streaming rented movies from the iTunes store directly through the apple tv to my hdtv (i.e. from my router without macbook pro being on) ... how do I get synced sound wirelessly to my airport express speakers? Will they be synced to my rented iTunes movie? I assume that I need to have my macbook pro on with Airfoil on, yes?
I haven't tried iTunes movie rentals yet, so I am not sure about the process. Is airfoil helpful to this situation?