Remove Vocals from any MP3 Song, Extract Background Music
This video shows how to remove vocals from a song recording using the free MP3 editor called Audacity. It’s for deleting the voice of the singer but not the reverse - you can’t keep vocals and delete the sound from music instruments.
Perfect for karaoke music. Work only with stereo tracks, not mono.

its nice .i had a doubt in audacity that ,how to split the vocal & track of single song..