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Manuela Saragosa takes a look at the expanding realm of digital copyright, from music to e-books. Amelia Andersdotter from the Swedish Pirate Party and Robert Ashcroft , a music executive argue about who a song belongs to. Jane O’Brien examines how e-libraries are becoming popular in the US. And Michael Norton, associate professor of marketing at Harvard Business School, talks about finding happiness by not spending your money. (Image: Sweden's Pirate Party supporters in Stockholm. Credit: AFP/Getty Images)