This fella' is making very subjective claims about the sound quality of foobar versus QCD and his whole argument seems to rest on the "inferior M$ kernel streaming hack." I don't know much about the subject matter but I think a blind test would serve him well. (I've not yet tried QCD).
EDIT: You'll have to copy/paste the URL as the forum software doesn't properly format a link due to it's nature.
EDIT#2: Apparently, most of the information in that URL is extemporaneous and unnecessary so click away.