can someone please tell me how i can extract the vocals from an audio cd so that i can put my own voice on it and other effects to create my own karaoke cd. and also, what software is required for me to play that cd (without vocals) in the cd-rom and vocals on a microphone to the pc's line-in or mic input for saving to the hard disk for later copying onto cd using my cd burner. why i ask is i'm not sure if pc's normally accept dual inputs (internal - cd; external - microphone) for recording onto the hard disk. any help would be appreciated.