Everything Auto

When I join truckers MP and load into the game my audio glitches out. I cant hear horns, road noise, windshield wipers, and truck Collison sounds or any sounds coming out of the gps. However audio from engine, turnsignels are there perfectly. I have tried to fix this by doing the following: -Total reinstall of the game and truckers MP - running the current snow mod and not running it. -making sure no single player mods are installed. nothing as worked, started happening randomly came on one day and sounds were gone. pls help