hi guys-im quite new on the scene and i have an issue-i have a xone db4 which i know that it can control traktor but it is a bit hard’ish because you have to change layers thru midi shift all the time! now,i was thinking of buying a traktor f1 controller to use with the db4 and my question is: do i need a separate sound card or i can use the db4’s one in conjuction with the f1-so,f1,db4 and my mabook! is this possible? thanx