Odd whine noise, when short sounds stop suddenly

I have an issue which seems to mostly occur after a short sound file finishes - for example, an instant message chime, or being told I have new mail.
I get a high pitched whine out of the speakers, until I hit play on another sound file.
So I'll have new mail, notification sound, then high pitched whine. If I hit play on iTunes, the whine stops. I can then stop iTunes and sit without whine noise.
Sometimes if I close a browser window which was playing audio via YouTube or something, it does the same.
It's almost like it doesn't realise the sound has finished and is still trying to play it.
Anyone else get this, or is it just me?

Can't really reproduce it, no. It happens sporadically.
I don't know when it started - possibly quite early on. It only makes the noise when music stops.
Play something and stop it again, and it's fine.
It's almost as if it doesn't really it's finished and continues trying to play something but has nothing to play.
Odd.
Message was edited by: parkibald

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import javax.sound.sampled.AudioSystem;
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Message was edited by: randallp

Odd whine noise, when short sounds stop suddenly

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