I have a Casio CTK-720 Mid Keyboard that I have hooked up to my computer with the driver working and I want to know if there is any software where I can just play the keyboard on my computer and have different tones than the ones included on my keyboard play (default Midi tones on windows are ok). Also, its there any way to mute the keyboard when it's inputting to the computer because when I turn the volume all the way down it still makes sound. Any help is appreciated.