If Rio would lay open the protocol used to talk to the Karma over TCP/IP that would be no problem, but I'm pretty sure they won't release such information (Please tell me I'm wrong)

If they're using a similar protocol as in the empeg, then that information is already dispersed in various posts on this BBS. Mike wrote JEmplode for the empeg as a non-official third party application, and was later hired to create RMM Lite based on the strength of that.