Crap - not someone else
I "think" I finally dealt with the one guy who was selling everyone's stuff without permission by e-mailing him and telling him that I contacted Bon Jovi management - I think Paragon gave me the address. I can look it up since I'm sure I still have it somewhere. I don't know if they actually followed up or not since I never heard from the guy again but I did write a letter (I never found an e-mail address).
And then you can report the auctions to e-bay so they pull the stuff. That is less effective since the seller can still complete the transaction outside of e-bay. And they can change their nickname etc.
On the other hand - I try to take the cosmic viewpoint. Once it's out on the internet, people can do what they want and you really have no recourse. All of us post full flac files and ask that the mp3s not be traded but you know how far that goes too. Sometimes people just suck (I've been sick so I guess my tolerance for bullshit down right now)