I can't get my audio line-in to work. When I plug in my headphone set i get nothing coming through (Sound preferences is blank), but when I plug in the headphone jack to it, I get something coming through, so it is working. I have tried to change the input in preferences, but to no avail. I had the same problem in my PowerBook, so I assume it has something to do with the settings I brought across when I transferred over. It was never really an issue for me before, but now I want to be able to use Skype, and this becomes a major problem for me. Anyone any ideas on what to do??