This paper examines the concept of time in multimedia, World Wide Web-based courseware development. The biological concept of entrainment (the alignment of rhythms within and between systems) to accelerate courseware development is explored. The discussion begins with the foundational concepts of entrainment from biological systems and social psychology. Examples of entrainment in courseware development are then presented, including illustrations of the following four components: (1) rhythm (multiple endogenous temporal or rhythmic processes or patterns); (2) mesh (mutual entrainment or synchronization or rhythms); (3) tempo (temporal patterns expressed in actual behavior resulting from synchronization of rhythms); and (4) pace (external pacer events or entraining cycles affecting rhythm, mesh, and tempo). (Contains 36 references.) (MES)