One of my fav bands in 'Foo Fighters', the man behind this rocking beast is Dave Growl, previously famous as the drummer of Nirvana. There is now a 1 page interview available with Growl from Time Magazine. One of the questions deal with piracy, this is his answer;
I don't have a problem with people downloading music. To me the important thing is that people come to my shows and see the music live and have that personal experience with the band. I've made a decent living making music. I'd feel greedy if I asked for anything more.