https://bugs.winehq.org/show_bug.cgi?id=41915
--- Comment #2 from irrenhaus3 irrenhaus3@gmail.com --- (In reply to Bruno Jesus from comment #1)
To check if that is the problem you can raise the limit, read https://bugs.winehq.org/show_bug.cgi?id=39591#c26 onwards.
Thank you very much, that fixed the playback issues. For search engine people stumbling about this thread: Add the following configuration to the OpenAL config file, on Ubuntu/Mint located at ~/.alsoftrc:
[General] sources=1024
The sound mixing issue seems to be present still - all sound effects play at full volume, disregarding the game's settings.