MIT
http://joewilliams.github.com/merle/doc/
http://github.com/joewilliams/merle/blob/master/README
http://joewilliams.github.com/merle/releases/merle-0.2.tar.gz
However I suggest using the most recent code from github (below).
You can also clone the project with Git by running:
$ git clone git://github.com/joewilliams/merle