Screensaver said:
When my screensaver comes on it also plays a tune. How
do I turn it off?
Depends on the screensaver, I suppose.
As I have no screensavers that play tunes - I would guess this is not a
default screensaver and even if it was, you should look in the properties of
the screensaver in the same place you select which screensaver to use, how
long it takes for it to come up, etc.