Winamp 3 sucks, still. It's laggier, buggier, and is not worth using for "coolness factor". There are no problems with Winamp 2.x that I know of, I can play all my media files with Winamp, and it loads instantly, and plays files instantly. What need would anyone have for using a laggier and buggier "new" beta version? None. Stick with 2.7 or whatever you use.
-RSI