SoundJam MP, released by Casady & Greene in 1998, was renamed "iTunes" when Apple purchased it in 2000. The primary developers of the software moved to Apple as part of the acquisition, and simplified SoundJam's user interface, added the ability to burn CDs, and removed its recording feature and skin support. The first version of iTunes, promotionally dubbed "World’s Best and Easiest To Use Jukebox Software", was announced on January 9, 2001. Subsequent releases of iTunes often coincided with new hardware devices, and gradually included support for new features, including "smart playlists," the iTunes Store, and new audio formats.
Apple released iTunes for Windows in 2003. In May 2017, Microsoft and Apple announced that they would bring iTunes to the Microsoft Store by the end of that year in order to work on Windows 10 S devices, which are limited to software available in the Microsoft Store. However, Apple told ZDNet in December that it "[needs] a little more time to get it right", and thus won't be available in 2017.Apple released the Microsoft Store version on April 26, 2018.