 The 2.x versions were widely used and made Winamp one of the most downloaded Windows applications.By 2000, Winamp had over 25 million registered users and by 2001 it had 60 million users.A poor reception to the 2002 rewrite, Winamp3, was followed by the release of Winamp 5 in 2003, and a later release of version 5.5 in 2007.