try AnalogX Vocal Remover - free
Allows you remove the vocals from most music!
Uses the same algorithm that the hardware Karaoke
machines use (180 degree phase offset).
Great for hearing the music more clearly as well as ripping samples!
Compatible with any realtime or non-realtime DirectX application
(like Cakewalk, WaveLab, Paris, CoolEdit, Sound Forge, etc).
see WinAmp Vocal Remover too.
homepage with tons of good free progs:
http://www.analogx.com/welcome.htm
direct to vocal remover:
http://www.analogx.com/contents/down...o/vremover.htm
my little hint:
when the voice is in both channel you can got a good result,
loosing some basses and listen some reverberations (aceptable) but
when the voice is in only one channel(means only in right or left channel),
all programs that i know can't do a perfect job removing the voice!