Due to recent Roblox updates, audios (such as sirens) may not work on your assets.
We can not do anything about this, for us to grant you access to the audios via the new update, it would require me to be a developer for your game which is not feasible therefore we will try our best to sort this but we can not grantee sirens will work on your asset(s).
Thank you and sorry for an inconvenience caused by another one of ROBLOX's stupid ideas.
Dan,
Chief Executive Officer