Can someone give me a little info on sounds? Where are they found, and how does one insert them in a custom layout? Do you just "apply" them to the ground, like an object, in surveyor???
Sounds, such as birds, water, ambient noise, etc., are actually objects. These objects take on various shapes ranging from small flat squares with a symbol on them to tower-like objects all of which are invisible in driver.
There are various authors that have made sounds including pgmetcalf, bossman, and others.
In the event that the sounds don't work for some reason, there's a procedure to repair them, which is really easy to do. See here for details: