Administration declares IP treaty a national secret

Actually, secret negotiations doesn't necessarily mean that the music industry has a special in. It could just as easily mean that govts/politicans are negotiating special deals for themselves. It could mean that large patent holders have an in. It could mean that movie/book publishers have an in.

It could even mean that smart folks representing "citizens" have an in and have figured out that secrecy is the best way to keep the loons from screwing things up.

My money is on govts/politicans.