Vocal Remover for DirectX Media and Winamp

AnalogX Vocal Remover is a free vocal remover tool for Winamp and DirectX audio that will turn off the vocals form a song track to emphasize on the music. By making this assumption, you can remove whatever is the same in both channels by changing their phase relationship by 180 degrees, and then summing the two channels.[source]
Download free Vocal Remover (WinAmp)
Download free Vocal Remover (DirectX)
AnalogX Vocal Remover Website