Oh no, sorry you went through that and it still isn't working for you...
For some reason it still can't find your audio hardware, though it's really just asking the OS for access to whatever the system's audio device is... Something else must be preventing this, since the game gets a "no audio device" response from the engine, though there's nothing extra I can do on the game side to see what that is.
Haven't heard of anyone simply not getting it to work at all in the end like this. Another possibility is specific to Linux, where some people in the past have had audio configuration issues and needed to change an environment variable or something like that to get it to work (you didn't mention what OS you were using, though I assumed Windows, not Linux).