For all of you who come here and get depressed: As of today and courtesy of AVPLGV for finding out there actauyll is a quite simple way of extracting all sounds from ACM. Download WWise unpacker here:
https://github.com/Vextil/Wwise-Unpacker. Follow the instructions there and use it on .pck which you find in your game directory. Tadaa, all the sounds belong to you
Cheers all and happy modding