Could be some of your files are in stereo format...changing them to mono and see...
I made exactly the same soundformats as they are in the original game....
But..i think the problem are the german .ogg files they aren't compatible to the new
1.5 Version
I used the german soundpatch from UBI...it's bizzar....it doesn't fit...
Just installed the soundpatch over the clean 1.5 Version and had exactly the same CTD.
That should be the problem. But ok, i'm not 100% sure atm