Editing ITunes (section)

===The iTunes Store (2003)===
Introduced on April 28, 2003, the iTunes Music Store allowed users to buy and download songs, with 200,000 tracks available at launch. In its first week, customers bought more than one million songs. 

The store's success was driven by several key factors. The price point of 99 cents per song made it an attractive option for consumers.  For the first time, users could legally purchase individual songs rather than entire albums, reshaping the economics of the music industry.

Music purchased was protected by FairPlay, an encryption layer referred to as digital rights management (DRM). Eventually, after an open letter to the music industry by CEO Steve Jobs in February 2007, Apple introduced a selection of DRM-free music in the iTunes Store in April 2007, followed by its entire music catalog without DRM in January 2009. 

In April 2003, version 4.0 introduced the iTunes Store; in October, version 4.1 added support for Microsoft Windows 2000 and Windows XP.  The arrival of iTunes on Windows dramatically expanded the application's reach beyond the Apple ecosystem.