Winamp is one of the most popular MP3 players out there. It is fast, easy to use, and is very flexible when it comes to configuring. It has a built-in music organizer and equalizer.

Winamp can play MP3 files, audio CDs, .WAV files, Windows Media files and most other popular types of music and audio files. One of the main reasons for its popularity is its support of skins and plugging. With the current version (v. 2.5) this great program has been made freeware. It is entirely free, and all features are available without registration.