well if you read how the game actually works, this is not the type of game where the turntable is just another button that you spin rather than press like beatmania,
you will be using the turntable and cross fader like an actual scratch turntable,
ie cutting with the fader while manipulating the turntable forwards and backwards to create diff sounds!!
look at what numark actually just released:
numark NS& controller
http://www.djtechtools.com/wp-conten...numark-dm7.png
this is a standard set up for djs and have the configuration like i want, will work as you dont uses the buttons and turntable mush at the same time.