[expert] Real Player/Wierd sound troubles

[marsden]

Greetings all
I've acquired an utterly wierd sound problem, bearing in mind that 2 days
ago everything was working just fine.  CDs play beautifully, but RealPlayer
suddenly no longer has sound.  I updated RealPlayer a week or so ago, and
the sound was working OK at and after the upgrade.

Any suggestions?
Thanks!
Marsden