A system controller, preferably implemented as a cloud service, enables the synchronization of display devices located at geographically remote locations relative to one another. A display and control devices are provided at each of a plurality of sites, with one or both of the devices being capable displaying the transmitted show. The control device enables the system controller to determine local relative delays in the show and to control the temporal reproduction of said transmitted show by said display device so as to achieve a substantially synchronized reproduction of the show at each of the sites.