I have installed Majaro on this PC now, since I couldn't get the sound working properly.

In Manjaro, there is no /dev/dsp, but the sound is working properly. I don't have any trace of OSS installed either.

Here's a recording of how the music sounds

https://youtu.be/7SfxnWe1mRU

I might have celebrated a bit prematurely. Installing osspd gave me audio, but the music sounds horribly garbled. Like it's trying to play the entire song at once, or at 10 times speed.

But hey! Progress!

Hah! Fixed it!

After reading about other people with missing /dev/dsp, I came across a pulseaudo oss proxy daemon, and installing this worked!

So just for the record, here's what I did to make it work:

sudo apt install osspd

Thank you for the help so far. libasound2 and libasound2-plugins were already installed. How do I force the game to use ALSA instead of OSS?

No. There's no /dev/dsp

But like I said, the sound is working in the OS, and oss-compat and oss4-base is installed, so it *should* work. Running systemctl status oss4-base confirms that the module is Active.

I upgraded to the development branch of Ubuntu 19.04 today. Now, whenever the game launches, I get to the main menu, and a pop-up displays with the message "Couldn't initialize audio. Audio disabled". The game plays fine, but it's really not the same without sound...

Pulseaudio and oss-compat is ...