I have a 13'' Macbook Pro. One thing I hate is only having one port, chosing between Audio in or audio out. I have turtle beach x31's, and I want to be able to plug them into my Audio port, hear the audio and also use the Microphone at the same time. . (I know I need an adapter for 2.5>3.5mm) Is there ANY possible way to do this besides buying an external USB hub?