Is there a free music mixing program where i can play the vocals of one song to the beat of another, I was in the car the other day and i heard on the radio a song that they mixed toether, I kissed a girl - Katy Perry, See you Again - Miley Cyrus, it was fantastic, but i havnt been able to find it anywhere, so i wanna do it myself. It was the vocals of, I kissed a girl to the beat of See you again. plz help 