It's not that tough, just grab riorid.jar from here and the command line goes like this:

java -jar riorid.jar empeg <empeg-IP-address> " " missing

The first parameter, "empeg", tells it to use the empeg protocal instead of the Karma protocol. The second parameter is your empeg's IP address. The third parameter is the network password for your empeg if you have one, in my case I don't have one so it's " ". The last parameter, "missing", simply tells it to fill in RIDs that are missing rather than trying to re-do RIDs for the whole player.

Anyhoo, once you've done that, then you can copy and paste playlists straight from the empeg into the Karma, and it'll copy the playlists and the music files, or just the playlists if the files already exist.