Winamp is a flexible (supported with plug ins) media player for Windows. Winamp has a full-featured playlist editor and a 10-band graphic equalizer. It can playback many audio formats such as MP3, OGG, AAC, WAV, MOD, XM, S3M, IT, MIDI, etc. and video types AVI,ASF,MPEG,NSV. Also, audio visualization and audio effect plug-ins, user-definable presets, advanced media library, Internet radio/TV support, CD ripping/burning.

Winamp Features
Synchronize your Media Library with your portable media player Compatible with iPod®, Creative®, and Microsoft Plays For Sure® devices
Coding Technologies aacPlus High Bitrate encoder available in Winamp Pro
Coding Technologies aacPlus (HE-AAC) in MP4 container
Coding Technologies LC-AAC encoder
icons in treeview, Dynamic AJAX Internet Media Hub
Using Coding Technologies AAC playback within NSV container
gapless MP3 playback, multi-user profile options
remembers your previous installer settings
in_wave 3.0, right-to-left playlist display