Catch the guy who uploaded it, i am innocent i just clicked where it said download now.
I am an IT guy and i believe in open source and i believe if its available on the net its fair game.
Having said that there are techniques like "Safe Audio" which introduces surface or nano errors, that only physical drives can correct while playing. Copying the media to lets say the hard-drive from the CD, and you will get corrupted data that can't be played, so uploading/sharing is useless thats killing the source. Thats just one technique, i am sure their are others.