American Audio 10MXR 14MXR and 19MXR mixers @ NAMM 2012 with DJkit.tv

Le quitaron los medidores de led por canal :(

 I recently purchased a 10MXR and am having trouble connecting it to my PC to use Virtual DJ. I was under the impression that it was "plug and play" but the audio doesn't seem to be working,(the master volume level indicators are not lighting up), even though other functions are working just fine. Do you have any suggestions?

Thank you for your help.