Check if BeamNG.Drive is muted from your Windows audio mixer. If not, check if you see the 'green-audio-level' thing moving in the audio mixer or if nothing is showing up. Check the Audio options ingame (Maybe you set them the 0% by accident?)
Thank you for your amazing help. All that happened was that my speakers weren't selected on the audio settings. Thank you so much!
ok. if you have raptr or AMD gaming evolved app under win10, delete it. it fixed about 6 of my games when i did that.
Continued there: http://www.beamng.com/threads/15026-0-4-1-x-Current-bugs-and-help-thread-0-4-1-0?p=236275#post236275