@NeuroticFish, where did you read that you can recover them that way? I think that you're referring to Multibit HD. He said that he used Multibit Classic. I have no idea what's the difference between these two, but there may be one.
Basically the problem is that there are no binaries of Multibit Classic somewhere on the internet, I've checked lots of sites. If there were, it'd be much easier to help him/her. The project is officially abandoned:
https://github.com/Multibit-Legacy/multibitDear Bitcoin Community,
It is time for us to let Multibit go.
And they've only left the source files. Is there anyone understanding how to compile Multibit? Because I don't.