2, if the beat of the USB flash drive does not match the machine, you can try to use other USB flash drives or download other square dance music USB flash drives, to see if you can find the beat that matches the machine.
3, if all the above methods are invalid, you can contact the machine's manufacturer or maintenance personnel to seek professional help and advice.
4, if you can't solve the problem of inconsistency between the beats of the machine and the USB flash drive, you can try to manually adjust the dance moves to make them consistent with the beats of the machine. This requires some dance experience and skill, and you can seek help from dance instructors or other experienced square dancers.