Comment by comprev

The source code itself appears to come from a cracked version [0]

   supplied by deadbeef\n\n\

   cracked by rOn\n\n\
 
   32kb cool intro by lone";

[0] https://github.com/WinampDesktop/winamp/blob/community/Src/W...

Edit: Apparently it's an Easter Egg! Credit to bri3d for research