I have a microphone headset and I can't get it to work with Skype on my macbook - only the default microphone by the webcam works!
Do I have a faulty macbook or does it not accept microphones? Thanks.
I had the same issue. After installing Windows I realized that the line-in port can work quite well as a mic. As long as you're working in OSX, that port ain't gonna work with a mic. You'll have to buy an imic or a USB headset.
Basically the port can work as a line-in OR a mic-in. The soundcard can auto detect what type of signal you're inputting. At least, that's how it works in Windows. Under OSX, a mic just plain doesn't work. It's pretty obvious that apple simple has omitted this feature from OSX. It should really be fixed.
Im quite frustrated about this myself, consider a mic WORKS under windows in that port, using the very drivers that applies provides with bootcamp. weaksauce.