When i first setup the MP I noticed that all the audio was coming through my internal speaker rather then through the line out to my harmon/kardone speakers. So I went into the audio setting and noticed that the internal speakers was choosen. No problem, it was an easy fix. But I have never heard of a mac coming from the factory like that. Now I am faced with my line in not working, and the setting for that are fine. Does anyone have any ideas for that? I have tested my mic and know that it does work.