I did download the latest JAR from the jEmpload site, so I think that worked.

I hadn't thought to try ethernet with RMM; that's a good next step.

Like I said, this is pretty low priority so I probably won't get around to diagnosing until next week sometime, but I'd really like to get this working. I'm planning on getting a Karma of my own some day, and at that point I'll HAVE to have nested playlists working.