Older Rekordbox Version!?

Hello!
I am trying to install a compatible version of Rekordbox file management onto my Macbook. Unfortunately, its a bit dated, (2007) and I am only able to run Mac OSX 10.7.5 . I had version 3 previously installed, but hadn't used the software in quite some time (the frequency of my DJ gigs has dropped dramatically recently) and noticed today that there was a more recent version. Unfortunately, I uninstalled the version of Rekordbox that was working on my computer, in the hopes that version 4.2 would work, but alas it does not. Please help!!!!