Out-of-sync Audio on Intel Macs
by Erica Sadun
According to a recent Apple support article, some Intel Macs may experience sync problems when you plug devices into or remove them from the line out jack while using line in to record or monitor input. The computer's audio goes out of sync with the actual input source. If this happens to you, stop and then restart input playback. If this doesn't work, quit out of your audio monitoring/recording application and relaunch it to fix the sync.