It’s the latter – insufficient mic sensitivity. I looked at that thread, and it looks like I should attempt to follow the steps described by hartsteins in his May 25th post to nvrtd. Is that correct? The other parts of the thread seem to be about output routing. He mentions recompiling the framework after making the addition – does the framework get rebuilt when you do a clean->build in XCode, or are there special steps required to get the framework to recompile?