Backing up Rekord box USB Device (songs + playlists) to Computer

Hi,

I use two computers with Rekord box and DJ with a USB stick. I drag songs from both collections onto the stick and create playlists. (I would never want to sync my entire library to my USB. Instead, I choose to select specific songs).

My question is : 1. How in gods earth do I back up this USB's entire playlist / folder structure to my computer without just manually dragging each playlist to the collection every time I add a new song on the USB?

1. How do I back up this USB drive to another USB drive?

I am on Mac OSX.

Thanks