Disable Welcome to Avast at install

[REDACTED]

I have created a custom admin.ini file that adds the following settings during install for disabling sound.

[common]
SoundsEnabled=0
SoundsVirus=0
SoundsSuspic=0
SoundsPUP=0
SoundsScan=0
SoundsUpdate=0
SoundsFirewall=0
SoundsVoiceover=0

After install is complete, "Welcome to Avast" audio is still enabled.  When I look through the settings, all audio is turned off.  Is there a way to silence this?  We are planning on deploying this during the school day and do not this audio popping up on hundreds of computers.

[Eddy]

It would be fun to place some webcams and stream the video so we can watch the reactions 

[Asyn]

We are planning on deploying this during the school day and do not this audio popping up on hundreds of computers.

Please post/ask here: https://forum.avast.com/index.php?board=55.0