[richiebee]

Sibelius probably uses a GM soundset as its basis for defining program change messages. Is your keyboard set to the GM soundset? Even if that's not what you want, give it a try to see if it produces sound.

Do you have a driver disc for the Korg? Do you have its drivers installed on your computer?

When you play the keyboard, do you hear the sound? I know it sounds obvious, but I gotta ask.

R.