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Walkman to iPod: Business-Model Transformation - Vox
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Apple's iPod came out two decades ago and changed how we listen to music. Where are we headed now?
Zune vs. iPod specification smackdown | Engadget
RIP iPod, the MP3 Player That Changed the Way We Listen to Music | PCMag
Sony Walkman MP3 Player Review | Leawo Tutorial Center
Amazon.co.jp: MP3 Player iPod Classic Video 30 GB Black Audio & Video Portable MP3 and MP4 (30 GB, Black) : Electronics
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The best MP3 player for every budget
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From Walkman to iPod: What Music Tech Teaches Us About Innovation - The Atlantic
The iPod VS The Walkman - which was the best portable music player? - YouTube
Flashback 1998: Birth of the MP3 Player | Sound & Vision
iPod 15 years later: the pros, cons and memories of Apple's massively popular MP3 player | TechRadar
We Asked People Who Still Use MP3 Players: Why?
