3D sound not working for me

Hello

I have been trying for the past week but I cannot seem to get 3D sound to work. Even in new install of Unity 5.6.1f1 and new project. No matter where I place an object (far away from the camera) the volume stays the same when I press play.

I have only one Audio Listener attached to the scene (Main Camera) and a FPS controller and one cube with an audio source attached to it.

Not sure what I am doing wrong might have missed something , but any hints would be great ! Thanks.

Your inspector is in debug mode, can disable that from top right,
then can see the 2D/3D setting there:
3094621--233512--upload_2017-6-4_20-51-20.png

Wow , thanks a lot ! Was bugging me for a week trying to see what happened after the install. All my other things have come back too now!