https://bugs.winehq.org/show_bug.cgi?id=49914
--- Comment #2 from Scott shagooserver@gmail.com --- Still occurs in wine 7.4.
To reproduce, download the free CLI program EAC3To: http://madshi.net/eac3to.zip and fire it up. For ease grab an audio file to process, preferable a stereo or 6 channel wav file. Enter this command: eac3to [source file].wav [destination file].wavs
This will split your multi channel wav file into files containing each channel. So if the source is stereo you will get 2 new files, if it is 5.1 you will get 6 new files. example: eac3to c:\folder1\music.ac3 c:\folder2\music.wavs