Hiya
I'm not sure if this is a hardware or software problem however...
Ive just re-installed Xp mce after i was unable to fix a problem within media center. Now I Have no audio. Before Re- installation my Device manger showed Cmedia audio device. after installation this is not here. I thought as this is hardware it shouldn't be wiped out by a clean install. Also i have no idea what version etc my sound device is. so downloading drivers is a tad hard! 

In case this is helpful this is what my device manger shows under sound, video and game controls:

Audio codecs
happauge Nova-DT dual dvb-t  tuner device (+IR)
Legacy Audio Drivers
Legacy video capture devices
media control devices
Unimodem
full-duplex audio device
Video codecs


Philips Freeline LS1100
768mb ram
250GB NTFS
Intel P4 (HT) 3.2 GH
ATI radeon X300se 128mb
16x DVDRW

You need to install the driver for the card, otherwise Windows doesn't know how to drive it and shows it as not there.  You can find drivers for CMedia devices under XP at http://www.cmedia.com.tw/?q=en/driver. 

They don't have Vista drivers, but there are open source drivers for some cmedia based cards at http://cmediadrivers.googlepages.com/home.

Mike

Cheers for the infomation Buddy.
Ive been there to try and download a driver before.. but i dont know my model. how will i find this?

You didn't say whether this was an onboard (MoBo) audio or a separate card.

In either case, you should be able to locate the actual chip and read the printed part number from it.  Alternately, you can research the part number from the manufacturers description of the MoBo/Card.

Another option is to check with the manufacturer's web site for the drivers.

Mike