Reply to New iMac. How to sync Traktor/iTunes libraries with beatgrids, cuepoints, etc.

I know I can periodically drop all my Traktor files on an external HD and transfer that way, but is there an easier more efficient way. There HAS to be people in my position.

New iMac, gorgeous. Will be doing 90% of my DJ/Production work on the iMac. How do I keep my Trkator/Ableton/Logic files the same on both. When I go perform, I'll need all my latest tracks, beatgrids, cuepoints, ets. I'd love to work on some production stuff in bed sometimes, or while on the road.

Lots of people must do this. What is the solution?