Microphone input plug-in unity 3.0

I'm trying to get microphone input from unity 3.0. I know there's a plug-in that works only with the pro version but I can't find that plug-in.Oh, and I'm using mac. Please help.

Maybe you are referring to the plug-in that is used to capture the microphone input on an iPhone. You can check it here -> http://forum.unity3d.com/threads/30194-iPhone-microphone