I have a Compaq PC system and recently the audio seems to be acting up. When I view videos off the internet, like at youtube.com there is video but the audio is either not there at all or sounds like it is severely muffled. What I dont understand is that files that are saved on my hard drive work fine, video and audio. I have tried re-installing the browsers and the CODEC files and no good. It happens in Firefox, I/E and Netscape. Can anyone help with this.

Thanks in advance for any help that comes my way.