Abstract: A system provides dynamic control of a visual and/or audio presentation. The system comprises a storage such as DASD for data defining "stories" i.e. a multiplicity of still images or video segments and/or respective audio clips. A program file defines a list of the stories for the presentation, a sequence for presenting the stories in the list, and a time interval for presenting each story or between successive stories in the sequence. A control program directs display of the stories in the list in the sequence according to the time interval. The time interval can be dynamically changed during the presentation by a user via a system console. Pursuant to such a change, the subsequent stories are presented according to the changed time interval. This permits the user to tailor the speed of the presentation to the audience.