Yes it is absolutely ridiculous that such a basic feature such as audio, in game where audio is such a massive part of the gameplay, DOES NOT work. The developer has failed to fix the audio issues for months now.
I will continue using the Spidey Sense mod, until audio in the game provides the expected feedback. I know it might be shocking relevation to you but you are able to hear sounds through walls, IF they actually play.
A reasonable distance to set with the mod is actually 20m, as the director often spawns specials on the top of you anyway, and too much visual noise wont help you.