You’ll have to trigger a client event from the server to play the sound. You can’t run that native from the server
So in your server script have something like this:
TriggerClientEvent('playSound', -1) -- this triggers it for ALL clients
-- syntax: TriggerClientEvent('event name', <client source/id>)
And in your client script:
-- your code to play the sound goes here, along with anything else you want to do.