Can i just copy and paste my playlists

Yes. Assuming that you've created RIDs on your Empeg for all tracks that don't have one (i.e., pretty much everything unless you used recent Jemplode versions to put them there in the first place).

Right now, you need RioRid.jar to do it and knowledge of the necessary command line parameters. I hope that one day, Mike can integrate the rid-rebuilding feature directly into Jemplode instead of requiring a separate app to do it.