Abstract: A cassette-type magnetic tape player has a take-up reel mount operatively coupled to a motor. The take-up reel mount is provided with an end-of-play detecting mechanism for substantially ejecting a tape container, such as cassette or cartridge, out of the player when a full length of magnetic tape has been wound around a take-up reel within the tape container. A rapid advance mechanism for transferring the magnetic tape onto the take-up reel at a speed higher than that required during normal recording or playback and a guide mechanism for guiding a movable chassis for movement in relation to a stationary chassis are also provided.