added temporary sounds and tweaked rocket/explosion

scripts/die_particles.gd

@@ -1,12 +1,12 @@
 extends Node3D
 
 @onready var die_particles = $dieParticles
-@onready var audio_die = $Audio/Die
+@export var audio_explode : Node
 
 # Called when the node enters the scene tree for the first time.
 func _ready():
 	die_particles.emitting = true
-	audio_die.play()
+	audio_explode.play()
 
 # Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(delta):