projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
MilkDrop - 3D audio visualization plugin, compatible with WinAmp plugin API
AIMP - AIMP : Free Audio Player : Официальный сайт программы
Amarok - The Amarok team is proud to announce the immediate availability of the result of 2 years of hard work, the beta release of Amarok 2. 9. This release is marked by improvements, corrections and polishing of nearly all Amarok features.
foobar2000 - An advanced freeware audio player for the Windows platform.