About winamp:
Started in 1998, Winamp is one of the world's largest Free MP3 players, which is also capable of playing CD audio files, Audiosoft, Mjuice, MOD, WAV, and other major audio formats. Winamp allows users to customize the look and feel of the interface with skins as well as the availability of adding additional plug-ins which can add various visual effects to the player.
Main shortcut keys:
F1 About Box

Ctrl + A Toggles Always-On-Top
Ctrl + ALT + A Toggles Always-On-Top
Ctrl + W Toggles Windowshade mode
Ctrl + D Toggles Doublesize Mode.
Ctrl + E Toggles Easymove.
Ctrl + T Toggles Time Display Mode.
ALT + W Toggle Main Window
ALT + E Toggle Playlist Editor
ALT + G Toggle Graphical Equalizer
ALT + T Toggle Minibrowser
Ctrl + TAB Cycles through different Winamp Windows.
ALT + S Go to Skin selection.
Ctrl + P Go to Preferences
ALT + O Go to Built-in Visualization options.
ALT + F Jump to Main Menu
ALT + K Configure current Visualization Plug-in
Ctrl + SHIFT + K Start / Stop current Visualization Plug-in
Ctrl + K Open Visualization Tab of Preferences
Ctrl + J Jump to time in current track
J Open Jump-to-file Box
Ctrl + ALT + N Spawn new Winamp instance