http://bugs.winehq.org/show_bug.cgi?id=12963
--- Comment #14 from joaopa jeremielapuree@yahoo.fr 2008-05-19 23:39:12 --- Could you try the patch in the url http://www.winehq.org/pipermail/wine-patches/2008-May/054668.html
with a native amstream dll.
Try to do it with a fresh .wine folder
Joaopa