There isn’t much point of that, XMMS was basically that — a faithful reproduction of Winamp for Linux between 1997-2007. Since then there’s been a ton of forks — XMMS2, BMP, Youki, Audacious etc.
Audacious is still around, sort of (last release a year ago) and it’s basically Winamp, it can use Winamp skins and has plugins.