Fixed background music loop and added audio mixers

scripts/CSharp/Common/Audio/AudioDebugger.cs

@@ -0,0 +1,15 @@
+using Godot;
+using System;
+
+/// <summary>
+/// Takes the current contents of a AudioStreamPlayer and offers visualization and control.
+/// </summary>
+public partial class AudioDebugger : AudioStreamPlayer2D
+{
+    [Export] private float _offset_in_seconds_to_play = 0;
+
+    public void PlayFromOffset()
+    {
+        Play(_offset_in_seconds_to_play);
+    }
+}

scripts/CSharp/Common/Audio/AudioDebugger.cs.uid

@@ -0,0 +1 @@
+uid://clxb3n668oud3