For music the user owns, such as content ripped from CDs, the company introduced "i Tunes Match", a feature that can upload content to Apple's servers, match it to its catalog, change the quality to 256kbps AAC format, and make it available to other devices.
It had features reminiscent of Facebook, including profiles and the ability to follow other users.
The Telegraph reported in November 2011 that Apple had been aware of a security vulnerability since 2008 that would let unauthorized third parties install "updates" to users' i Tunes software.
Options for sound optimizations exist, as well as ways to wirelessly share the i Tunes library.
In 2005, Apple expanded on the core features with video support, later also adding podcasts, e-books, and a section for managing mobile apps for Apple's i OS operating system, the last of which it discontinued in 2017.
i Tunes has received significant criticism for a bloated user experience, with Apple adopting an all-encompassing feature-set in i Tunes rather than sticking to its original music-based purpose.
Sound Jam MP, released by Casady & Greene in 1999, was renamed "i Tunes" when Apple purchased it in 2000.
It was first released as part of the add-on package Plus! Later versions were available as free downloads, or in service packs, and included in the original equipment manufacturer (OEM) service releases of Windows 95 and later versions of Windows. This came after Microsoft used bundling to win the first browser war against Netscape, which was the dominant browser in the 1990s.
Its usage share has since declined with the launch of Firefox (2004) and Google Chrome (2008), and with the growing popularity of operating systems such as Android and i OS that do not run Internet Explorer.
"Smart playlists" are a set of playlists that can be set to automatically filter the library based on a customized list of selection criteria, much like a database query.
Multiple criteria can be entered to manage the smart playlist.
The original and main focus of i Tunes is music, with a library offering organization, collection, and storage of users' music collections.