when you dance, you can either wear anything and press the D button, or you can also hold a jukebox alone (it is limited) and press D, and see your penguin breakdancing.
go to the town then go in the building in the middle then you will be in the nightclub click on the dj set to play dj3k click on the sign that says dance contest to do a dance game go upstairs and...
You mean boombox. well, first you can't have anything on exept the raido/boombox, and dance. if you want to GET the boombox, you need to a member and had to get it at the music jam party 08.