AIW Capture Playback sound level not stable with C-Media.

[TechniCompSoftware]

ATI AIW 7200 Video Capture Card.
PC-Chips M848A Motherboard w/ Athlon XP 2200
With on-board C-Media AC97 3D Audio Device

I just installed a New Motherboard and CPU and now I have a problem
when capturing.
The audio sounds perfect from the PC Speakers.
But after capture at Mpeg-2 Standard settings the sound
volume level is not uniform on playback. It bounces from normal to very loud and back to normal again at random times.

It seems that the recording sound level is not stable.
When I run the ATI configuration compatability test,
it says the Sound card clock stability test result are OK.

Otherwise, the C-Media sound chip on the motherboard works great and
all other output is OK.
I really do not want to install a new sound card.

I have installed all the latest drivers from both PC-Chips Audio Driver and ATI.
Does anyone have a solution to this problem?

[lordsmurf]

I just installed an ATI AIW 128 PRO card on a system with a C-Media PCI card, works fine.

It's probably because yours in onboard. This leads to problems. Ditch the onboard card and get a PCI one. Spend $25 on a decent SoundBlaster card. You may not want to get a new one, but you probably should.

[TechniCompSoftware]

Well, a new sound card did the trick. Got a Sounblaster Live 5.1 for $30 and the sound capture works fine.

Thanks.