the question has been asked many times, and there is a way to separate vocals form a song, the only problem in doing so is that you might lose some of the instumental. The process does not produce two seperate tracks but "silences out" the vocals. I don't have the time right now to explain it all, (i'm in the middle of a lecture), but it involves using programs such as x-noise, x-click, x-hum, and other such noise eliminating programs in a combination to only allow certain frequecies to pass through, note: this process is only sucessful 50% of the time and takes hours of tweaking but if done correctly will only allow bass and instument notes to play through the song. If done correctly the pitch of the singer will be recognized and silenced and only the instrumental will pass through. Ill post a picture some other time, gotta go, experiment and good luck!