Here’s a quick look at PluralEyes™, the application for
Final Cut Pro that automatically synchronizes audio and video cips,
without the need for timecode. Click the image below to view the video
(length 2:30).

This is a class piece of software I have been looking for a program that can do this for years. It costs $149 and take it from me that is a steel.  http://www.singularsoftware.com/autosync/index.html