Okay, I take that all back now.

It's clumsy, but can be made to work.

(1) first, download the rmml.zip file from the Karma's built-in web server.
(2) "unzip rmml.zip"
(3) Install the Sun Java JRE.
(4) "java -jar rmmlite.jar"

And.. presto! Everything the win32 folks have (almost) is now there. Except rip and encode, of course.

Cheers