Abstract: An apparatus for synchronizing an audio stream beat with a movement tempo enclosed audio device generating an audio stream. The detectors determine the beat per unit time of the audio stream and the tempo of movement of a user. Control input carried on a user's finger control the play of the audio device and the synchronization operation. In one aspect, the audio device and the control input are carried in a sleeve worn on a user's finger and wirelessly transmit the synchronized audio stream to headphones worn by a user. In another aspect, the audio device and an accelerometer for detecting user tempo are mounted in the headphone and wirelessly receive control input from the finger mounted control input.