Music is not some kind of property like a building or a parking lot. If you want to extract things from your surroundings and create music, then do so. Just don't whine about it when someone extracts your creation from his/her surroundings and listens to it and shares it with others. Isn't that what music is supposed to be? It would be one thing if I downloaded someone's music and took writing credits. But "downloaders" are just listening and sharing. And I believe that listening and sharing are two things the world needs much more of.