I installed windows7 through bootcamp on my macbook air(2011). (and also installed windows driver from bootcamp) Everything is OK, but one problem - Sound quality is very poor. (maybe phone or radio quality?). In OSX, quality is good. I tried to change audio setting, sound quality tab, etc., but not fixed. Audio driver info shows "Cirrus Logic CS4206B (AB 91)". I googled for the updated driver, and found this : 2011 Mac Mini boot camp problems I tried it, but problem has not been fixed. Any idea? would be welcomed.