@Zipper you can try installing the app from Microsoft Store FxSound - Microsoft Store Apps
The other option to install through fxsound_setup.exe in two steps.
- Extract the installer by running fxsound_setup.exe /extract
Once the files are extracted, you can verify the cab file signature by running
signtool verify /pa fxsound1.cab - Then run fxsound.x64.msi (fxsound.msi on 32 bit systems) to install FxSound