Hi @m3n3v3r
Sorry for the delay in my reply.
To verify the cab file signature, you can install Windows SDK to get signtool and then run the command signtool verify /v /pa fxsound1.cab
You can extract the installer components in fxsound_setup.exe by running fxsound_setup.exe /extract
This will extract the files
fxsound.x64.msi
fxsound.msi
fxsound1.cab
The file properties tab “Digital Signatures” can also be used to confirm the signing,
If you are facing issues when installing through fxsound_setup.exe, you can run fxsound.x64.msi to install FxSound on 64-bit Windows. If there is any error which prompts you to find fxsound1.cab, you can select the fxsound1.cab that you have extracted.