I am disgusted as well by the RIAA.  I feel the record industry had a great ability to use the peer to peer network; instead they dropped the ball, and pissed off their fan base.  I do not think that record sales are being dropped (especially to the degree they claim), more that a lot of new music is crap.  
There is a great program called peerguardian 2.  You can find it at  
http://methlabs.org/projects/ this program is designed to block the RIAA and the companies they hire to connect to your computer while using a P2P program.  While I cannot say it is perfect I think this would remove a good portion of any danger of being caught by the RIAA.