http://www.techradar.com/us/news/computing/apple/itunes-12-in-os-x-yosemite-why-apple-needs-to-think-different-1259253
http://arstechnica.com/apple/2012/11/itunes-through-the-ages/
http://www.maclife.com/article/feature/complete_itunes_history_soundjam_mp_itunes_9
http://arstechnica.com/apple/2012/11/itunes-through-the-ages/
http://www.maclife.com/article/feature/complete_itunes_history_soundjam_mp_itunes_9