four-count-click.wav is original synthesized mono 16-bit PCM at 22,050 Hz. It has four short 440 Hz clicks, 0.75 seconds apart, around 80 beats/minute. It is not a musical work, sample or dance tradition. Use at comfortable volume only if a learner wants audible counting. Exact non-device route: count 1, 2, 3, 4 silently, aloud, by fingers or with four raised numbered cards; each count is equally spaced. Silence is fully valid. This cue does not supply a warm-up, movement technique or cultural rhythm.