The Red Hot Chili Peppers, The Black Keys, Black Sabbath and Jack White have been booked for this summer\'s Lollapalooza festival in Chicago. Also on the bill for the Aug. 3-5 event in Grant Park are Florence + the Machine, The Shins, Wale, Kaskade, Fun., Of Monsters and Men, and dozens of other music acts, the festival\'s Web site said. Tickets are on sale now.