Abstract: A system for the control, selection and synchronization of the movement of magnetic tape and filmstrip in a film projection system which may include a sound program. Film advance is synchronized with the sound reproduction by means of recorded signals on the magnetic tape which unambiguously specify the filmstrip frame number appropriate to the magnetic tape sound program. Means are provided to allow the operator to rapidly access a particular filmstrip frame by specifying its number. When a sound program is included, the invention assures automatic synchronization of the sound program with the filmstrip frame.