http://bugs.winehq.org/show_bug.cgi?id=16241
--- Comment #17 from Otto Rey otto_rey@yahoo.com.ar 2009-08-15 11:50:39 --- http://www.gamingnewslink.com/2008/11/11/fixing-call-of-duty-5-world-at-war-...
Appearently some Windows user have sound problems too, but changing sample rate do the trick.
This is related to this bug?