I say: Ubiquitous Media player. Temporarily threatened by VLC and trouble within Nullsoft, but now going strong again.
They say: "Winamp is a multimedia player that is skinnable, multi-format freeware / shareware. It also plays streamed video content, both live and recorded, authored worldwide. New features in Winamp 5.21 include headlining the numerous feature enhancements is the new portable media player plug-in, which lets you synchronize your local media with iPod, Creative, and Microsoft Plays For Sure devices. Take one step into the Media Library and you will find a number of enhancements--new menu item icons and a dynamic online services section which offers a new, engaging way to experience Winamp's free on-demand media. Version 5.21 also allows syncing to iPod and other mobile devices, adds aacPlus High Bitrate encoder, and enhanced Media Library.
bla bla bla"