Abstract: A digital signage system comprising: an interface connectable to at least one media store external to the system, each media store storing one or more media assets deliverable to a viewing device in response to a selection by a viewer associated with the viewing device; a user interface module configured to (i) control a display of a terminal associated with a custom channel producer to display media asset options, (ii) detect selection of a plurality of media assets based on detecting selection of displayed media asset options corresponding to the plurality of media assets, wherein at least one of the selected assets is stored in the media store(s), and (iii) receive display parameters selected by the channel producer; one or more display device; and a controller configured to produce a custom channel comprising the selected assets in dependence on the display parameters, and deliver the channel to the display device(s).