Which major music retailer's innovative digital sales strategy in the early 2000s revolutionized the industry by legitimizing online music purchases during the height of illegal file-sharing?

The music retail landscape has undergone dramatic transformation over the decades. From neighborhood record stores to digital streaming platforms, how we purchase and consume music has evolved with technology and consumer preferences. This trivia question tests your knowledge of a pivotal moment in music retail history that changed how the industry approached digital sales strategies.

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Apple's iTunes Store (2003)
Amazon MP3 Store (2007)
Walmart's Music Downloads (2004)
Best Buy's Digital Music Store (2002)