When Apple launched its music downloading service, iTunes, last spring, it marked a seismic shift in the computing and music industries towards an eventual embrace of the new technologies which have caused so many headaches for copyright holders. Now, Apple has (finally) launched a version of iTunes that runs on PCs, thereby greatly expanding the company’s reach and share of the legal downloading market. Cross-promotions with Pepsi and AOL will follow soon, and just like that, Apple CEO Steve Jobs hopes to do what the music industry has been insisting isn’t possible: convince consumers to pay for music they can still find for free on other services.