I just got my second hand Xponent ( in tip top condition ). I spend yesterday evening on mapping the buttons to my own taste. So far so good. I cannot get the audio settings the right way. Ik downloaded the latest driver for OSX 10.5.5, it is driver 1.7.1-1. In the audio settings of Traktor I see the soundcart of the Xponent as a 4 way audio card. In this case I cannot map the audio so that I have output on master, booth and phones. Do I miss something or do I need an other audio driver? I searched this forum for this problem but all I can find are midi and tks settings.