Auto-Audio Alignment
http://tv.adobe.com/watch/learn-premiere-pro-cc/merge-clips-automatically-using-audio-waveforms/
You still have to set markers to the clapper or wave form.
http://helpx.adobe.com/premiere-pro/using/synchronizing-audio-video-merge-clips.html
This shows how to do it using multi-cameras:
http://www.lynda.com/Premiere-Pro-tutorials/Automatic-syncing-audio-waveforms/126763/129899-4.html
