
open up the preferences/audio and select split mono for audio routing ,,,not the best solution,, the control pro has a intergrated sound card and has a dedicated monitor channel,,you have options ,, being a Apple system set up you have the oppunity to add two sound cards to gether to set up a monitoring system,,the best option would be to get a multi channel sc and use it to run your outputs from Cross,,
in order to suggest any solution we need to know what you are trying to accomplish /ultimiate goal,,,other words more info
have a look at this ,,might help in a solution
http://www.mixvibes.com/content/dj-cable

welcome to mixvibes fourm
