MilkDrop - 3D audio visualization plugin, compatible with WinAmp plugin API
AIMP - AIMP : Free Audio Player : Официальный сайт программы
projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
Windows Media Player - Get information about Windows Media Player and other Windows Media technologies.
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.
Quod Libet - A extensible Music player with Podcast support, web radio, playlists and many more.