So I admit, I am late to the party here. As my home/office infrastructure has grown, it has become necessary to easily replicate media between laptops, and to reliably make backups of content and data. After some evaluation, the tool that I think is going to best meet my needs is… rsync. Yes, that rsync.
There are a number of helpful guides out there, but I opted for this one. It is not the most detailed, but it's a pretty straightforward guide to getting going with rsync.