Jim, - Where did I suggest using the system volume, or the speaker's volume knob? - I was suggesting using your MA3 'M' button. What could be a quicker and easier way to adjust ONLY the Aquarium sound without affecting the general system sound than that, for your 'executive'? - Yes, the Up/Down arrow keys change the volume beautifully smoothly and slowly. But they aren't needed when you already have a volume slider..... How many ways to change or stop the music does an executive need?