I did search but couldn't find this topic. So when my iPhone headset is plugged into my MacBook Pro (the new one) the microphone button works on iTunes like it would on the iPhone! click once to pause/play, twice to skip to the next song, thrice to go back a song. Did this work on the first unibody, because it doesn't on the early 2008 15' MBP. and can some one try the volume control with the in ear/shuffle/3GS headset. again sorry if a topic already covered.