RIAA can fine you if you install Kazaa

Stewart Rutledge, writing here, said that the recent Elektra v. Barker case shows that the recording industry can sue merely having shared folders on your computer.

According to the case law, you are "making files available for distribution". Even if the files were legally obtained, the fact that you have them available for others to have a look at mean that you are considered a law-breaking copyright infringer and public enema number one.