My audio works fine in desktop mode, but with any windows 8 app (metro ui) the audio reduces to half sometimes when I alt tab to desktop. Its not consistent when this happens. but it happens frequently. I have the audio setting under the desktop set to "do nothing" when it detects communication software (skype etc), and I don't have any problems with itunes and other audio sources, just metro UI apps. A restart always fixes this, but I'd like to know if there is a setting panel I am missing.