Ok, I have a solution for this mess.
Its a workaround that involves deleting some files or simply moving them.
Download Fmod Bank tools from nexusmods:
https://www.nexusmods.com/rugbyleaguelive3/mods/2?tab=files
Make certain you download the old version 0.0.1.4, not the new one, the newest is bugged.
View attachment 1021461
Tool looks like this when opened
View attachment 1021465
Make a backup of ep2.bank inside the folder Steam\steamapps\common\Crusader Kings III\game\sound\banks
Copy over ep2.bank to the bank folder for the tool.
View attachment 1021462
Open the tool, click extract.
Go to folder wav\ep2
Scroll down until you see these files. Delete them or move them from the folder. The annoying shout sound is ck3_ep2_crowds_LOOPS_02.
But I wanted to be on safe side, I deleted all of them.
View attachment 1021463
When the files are deleted/moved away, back to the program.
Click rebuild, it will open up a new program that runs in cmd.exe
View attachment 1021468
When the popup all done comes the operation is completed. Copy over the new ep2.bank file to the original folder
Steam\steamapps\common\Crusader Kings III\game\sound\banks
Now you can experience tournaments without crowds shouting and cheering.