Hello there! @b1sshaa
First of all, I would like to thank you for creating topic on our forums.
I would like introduce myself before I will going to help you with your issue I really appreciate you shared your issue with us!
My name is Petr (RedWolf_TMP), and I am one of Support Team Members (Support Trainee) here on TruckersMP. My work is based on asnwering/helping to others with their issues/questions as soon as I am able to. I will do best for answering your question.
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Answer to your question:
Tbh, I dont know, how to solve this problem, because I have never used some SoundMod in TruckersMP. However I tried to search something for you posted below.
If I may recommend something to you, try this sound mod
Since TruckersMP doesn't support 3rd party mods, unfortunately there aren't many options to choose. Hope, you will be satisfied with this one.
As you can see there are some topics regarding questions about SoundMod.
Do not forget to let us know, if it helped to asnwer your question.
Have a nice day!
Regards,
RedWolf_TMP
TruckersMP Support Trainee