Audio playback in Godot is actually very straightforward. We add one AudioStreamPlayer, AudioStreamPlayer2D or AudioStreamPlayer3D node, assign an audio stream resource then call its play() function. However if the node is destroyed in the middle of a playback, the audio will become interrupted. This is a common case when dealing with impacting bullets, player pickups and so on.
In order to help with audio playback without having to worry about node lifetime, I created the Audio Master addon. How to use it can be found here. As usual, the addon itself can be found in this GitHub Repository.