Winamp 5 Beta 2 was released last week. Basically, Winamp 5 takes the things you loved about Winamp 2.x and adds Winamp 3 skinability. I haven't noticed any bugs so far, and the new modern skin alone is worth the download!
Download it here: http://downloads.planetmirror.com/pub/majorgeeks/multimedia/winamp50beta2.exe
Download it here: http://downloads.planetmirror.com/pub/majorgeeks/multimedia/winamp50beta2.exe