Create a new scene with Node as root

Rename to AudioManager

Add 5 AudioStreamPlayer nodes

Rename them as shown

Add a script to the AudioManager

Create references to all the Audio Players

In the ready function

Connect to the Signal Bus

Create a function to

play the wing sound

play the swoosh sound

Create a function to

play the points sound

only if the score has changed

Create the crash sequence

Don't play a sound if

crash or die is already playing

Otherwise play the hit sound

Wait a moment then

Play the die sound

Make the AudioManager scene an Autoload

Go to Project => Project Settings

Then Globals

Add the AudioManager.tscn file

Now open the Bird script

In the flap function

Play the wing sound