Hi,
IIRC, I never tested µ-law wave file, so it may well be that the ACM converter is broken
What is the policy for including sample multimedia files in Wine? E.g., I remember tests being skipped because msrle.avi is not present: http://www.winehq.org/pipermail/wine-devel/2008-October/070112.html
It is not acceptable that µ-law code bit-rots because of lack of continuous testing (assuming it worked the day it was checked in).
Regards, Jörg höhle