Updating recordbox 1.5.1

Hi,

I have two CDJ350's and have been using recordbox to manage my music, create and manage my MP3 playlists which I play back using flash drives since I got them in 2010. I think I need to update recordbox. I have been updating my CDJ350's with the latest firmware as it is released. Everything works fine.

Can anyone recomend the version of recordbox to update, I dont want to have re-import music files if at all possible!

thankyou,

Matt.