myTuneSync is a tool for keeping your iTunes music and video in sync across multiple computers.
Simply put, myTuneSync keeps all of your iTunes music and video files in sync across all of your computers. Plus, myTuneSync has the following features:
Automatic syncing can run daily, weekly or monthly
Password security to keep your library safe
Sharing of a single playlist or your whole library
Custom filtering to copy only the tracks you want
Bonjour networking to make connecting a snap
Macs and PCs supported and working together