Has sound been disabled in 3689 ?
There is no such problem with 3663.

you have to enable it in all versions.go to admin tools services and it is the last service down there.

Hi fares, did you mean enable "Windows Audio" under Administrative Tools\Service ?
I have already changed it to Start automatically.
In 3663, you can install "Sound Recorder, Sound Volume" under Control Panel\Add Windows Components\Accessories and Utilities.
In 3689, it is just not there.

Mmm funny...I can´t help you as I only have 3663 and haven´t been able to lay my hands on 3689 at all. (Must start using IRC ;) ). I would have suggested would you just said, but if it ain't there, mmm weird. Not under accesories or anything either?

check the file sysoc.inf , if it is listed in the file and has HIDE, after it, delete the hide and i believe the comma after it as well (not positive off the top of my head so backup the file first) then rerun the add / remove windows component wizard and it should show up

try to reinstall it manually .if you know your exact sound card ,gettheupdatefor it and install it .to make sure that iam right,tryo to play any sound file and if you get a message your sound card is not installed then this is it.

Thank you everyone.
Fares was right. I had to manually install the sound card.
It was not like WinXP which can pick up the driver automatically.
Anyway, I got sound and video now.