Hey! I was wondering if there was a way to use the iPhone's audio jack as an external jack for the macbook pro via USB or so, as i own the 13 inch model, that only offers one jack. I want to use garage band just trying out a bit and i'd need an extra jack for the headphones, otherwise the microphone will record what's played over the internal speakers. thx for your answers! EDIT: I forgot to say that I already tried things like AirPhones, meaning wireless stream to iphone. But there's unfortunately few moments of latency, so i hardly can use it for recording.