FILE - In this Oct. 19, 2007 file photo, customers try out the Apple iPod Nano at an Apple store in Palo Alto, Calif. A billion-dollar class-action lawsuit over Apple’s iPod music players heads to trial in a California federal court Tuesday, Dec. 2, 2014, in an antitrust case where the legal wrangling has lasted far longer than the technology that sparked the complaint. (AP Photo/Paul Sakuma, File)