When I upgraded from Windows ME to Windows XP, I found
that my soundcard seems to be recognized, but won't play sounds
because a device driver is missing for Multimedia Audio controller.
Since this is missing, I have no sound device, and no way to control
volume or sounds on my computer. Where can I obtain drivers
for this and install it on my computer?

Thanks.

In the future, try your Search button or Google and do a search yourself, you'l
be surprised at all the "things" you can find on the Web by using a little initiative
Sound card drivers (yamaha drivers, crystal drivers, opti drivers, ensoniq drivers
http://www.soundcard-drivers.com/