http://bugs.winehq.org/show_bug.cgi?id=20832
--- Comment #6 from apmetcalfe@yahoo.ie 2009-12-15 16:24:31 --- Actually, with furthur play the crackling occurs under oss too. Seems to be rarer though.
I don't really understand the differences in the sound drivers either. I will give your suggestion a try when I have the time.