Does it have an audio-in jack? The 2010s didn't, which is why I'm hoping this years do. The jack would be like the 13" Pro, two functions in one. So I think you have to go to system preferences, sound, input, then click the drop down box with your input options. Oh, and if you could, tell me what model you have too. This would save me $40 on an adapter, and I'm buying the computer/accessories today! :S Thanks in advance!