Glad you like it! That's...interesting that the sound doesn't work on Wine. I have not tested CTHON on it myself though. It's possible that it's due to outdated sound drivers used by GM81, CTHON's engine. There are plans (eventually) to get the game ported up to the latest version of Game Maker which would hopefully resolve problems like that, but we've been heavily focused on a new project in the last couple years. Some day soon I hope!
No problem!
GameMaker games in general seem to not have sound in Wine. I did get sound going by installing some native Windows components, but with really high latency, like 1-2 seconds.
https://wiki.winehq.org/Sound#DirectMusic_support
Anyhow, I understand it's a pretty low priority. Best wishes on the new project!