I was just informed by Casio's Tech department that I can use a WK-7600 keyboard as a MIDI controller linked to my computer if I want to use the keyboard as the input device for creating music with a computer music sequencer program along with a computer-based Orchestral sounds library on my computer. I was also informed that I can play sounds from a computer-based Orchestral sounds library into the WK-7600's sequencer if I prefer that sound to the sound in the WK-7600's sound library. In order to do this, I was informed that I have to buy special software that will make the above two functions possible. Anyone know that name(s) of software that will do this? The Casio technical support person did not, but suggested that I come onto this forum to ask.