Hey all, I feel so stupid having to ask for this, but I've been having troubles putting my Microphone to work. Here's my setup: OUTPUT: I'm using a Toslink/Optical cable to connect my Logitech Z5500 to the MacPro INPUT: I bought two different Mic (I thought the first one was defective), I plugged them into At the back of my MacPro. Both microphones are standard 3.55mm Microphones. Then I went into System Preferences, under sound, I chose Line-in (Port: Audio Line-in Port). I'm not sure if I'm missing anything, but when I'm testing it out with Voice Candy, it isn't recording anything, neither with Skype, or Ventrilo. It's just not receiving any feed from the Microphone at all! What am I missing here? Same thing with MacBook Pro, same setup/config, no go. I have to use MBP's builtin Microphone.