Hercules Mix Controller

I saw the DJ at a recent party I went to using this small gadget to control a laptop PC running Virtual DJ. This thing is small and I do mean small! It is selling at a very cheap price too. I heard that Hercules, the maker of this DJ controller, first came to prominence in the computer industry making sound cards and computer peripherals. There are many other companies making controllers like these but this is the first time I have seen something so small. Interesting little gadget this is.