Even if you had jEmplode.dll, you wouldn't be able to communicate with the Karma over USB ... It's a completely different protocol (much lower level than the Empeg, it's actually controlling the drive from what I understand) that is not open source. Sorry, it's pretty much Ethernet or nothing for Karma+jEmplode.

As far as Palantir, I believe you just need the plugins folder + put the jar in there, but that's not my bag, so I wouldn't take my word for it