Zune is a discontinued software program that was developed by Microsoft for Windows[1] that functions as a full media player, library, media streaming server,[2] mobile device management, and interface for the discontinued Zune Marketplace.

In October 2012 its replacements products were launched: the new phone companion app is used for syncing with devices running Windows Phone 8 (including 8.1) and Windows 10 Mobile,[4] while Xbox Music (later known as Groove Music) and Microsoft Movies & TV were launched to fill Zune's role as a media player and streamer.

On the PC, the Zune software streams files to other PCs, the Xbox 360, and other compatible devices.

Zune Marketplace DRM content could be played by other WMDRM compatible applications and devices.

Zune Marketplace offers television shows from the following companies: A&E, Anime, Bravo, Cartoon Network, CBS, Discovery Communications, E!, Fox, 20th Century Fox Television, G4, GamerTV, History Channel, Marvel, MLB, NBC, Universal Media Studios, Paley Center, PBS, Spike, Starz, SyFy, TNA, USA Network, and Viacom.

Movies from Paramount, Universal, Warner Bros. Pictures, 20th Century Fox and other studios are offered for purchase or time-limited rental.

Selected content purchased via Zune Marketplace on the Xbox 360 additionally offers 5.1 surround sound.

On August 31, 2012, the apps sections of the Zune Marketplace and users' media collections were disabled within the software.

In October 2010, certain Zune Marketplace content became available in additional countries in North America, Europe, Asia, and Australasia.

The Zune software for Windows PCs offers the entire selection of music, podcasts, videos, and applications.

Zune Music Pass subscribers in the United States and other select countries were permitted to keep 10 songs per month even after their subscription ended, however the incentive was ultimately discontinued.