1. A non-transitory computer readable medium containing program instructions for causing a computer to perform the method of: accessing data representing displayable multimedia content for presentation to an audience; displaying a representation of a first subset of said displayable multimedia content in an application window on an operator display; displaying said representation of said first subset of said displayable multimedia content in an application window on a secondary display; displaying a representation of a second subset of said displayable multimedia content in said application window on said operator display in front of said representation of said first subset such that said representation of said second subset overlaps at least a portion of said representation of said first subset on said operator display, wherein said representation of said second subset is not visible on the secondary display, and wherein said representation of said first subset on said secondary display remains unobscured; and manipulating in response to operator input said representation of said first subset on both the operator display and the secondary display, wherein said representation of said second subset remains visible on said operator display in front of said representation of said first subset during said manipulation.