I've been converting my collection of videos across the last week and the audio stopped working. I am convinced that it might have happened when I started multi-tasking in iPhoto and played a movie with Quick Time. See attached errors.
I was able to restore audio via Shut Down and Restart. I did read here that someone experienced the same issue, but on Windows 7.
So, when recording, what task am I NOT allowed to perform? Can I use iPhoto, as long as I refrain from playing any videos?