What I propose is that each person choose a beat of their choice for the juggle, but must mention the name of the original track so that the audience can fully appreciate (and judge!) how creatively and imaginatively that person is flipping the beat. This way, I won't have a problem with people using Serato, since I would know that the beat is not programmed to make the juggle easier; and no time is wasted in "voting" for the beat of the month; and no money is wasted for people who don't have that record and therefore has to purchase it new. And yes, no buttons please.