Yeah, the deal is that RMML and JEmplode are about 95% the exact same app. However, there is a chunk of Rio/whoever priorietary code that is left out of the source distribution, but included in the binary distribution, that adds the extra 5% for Karma support. It's basically just Karma's ethernet protocol definition, etc.
I fell bad when people email me asking about source, because it's just sitting in my CVS rotting, but I just don't have the legal authority to give it out. That said, you could probably decompile it very easily
ms