I recently bought a Casio WK-110 and i need a sustain pedal i want to know what kind of pedals work with it or would any conventional one be good? id like to hook up headphones to it so i can play it at night i used my headphones i had already but it wouldnt fit into the back of the keyboard and im just wondering what kind of headphone set i need to hook it up and i want to know what i size usb cable i need to hook it up to my sibelius program