foobar2000 - An advanced freeware audio player for the Windows platform.
Magic Music Visuals - Fully-customizable and highly responsive visuals for live and recorded audio & MIDI.
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
PlayerPro - PlayerPro is a media Player for Android devices running 2.x. Features :
Kauna - Kauna is a music visualizer. Kauna renders any sound reproduction in system.