BTSDS: Piano notes will now stop properly even if the game switches during them.

Assets/Scripts/Games/BuiltToScaleDS/BuiltToScaleDS.cs

@@ -190,10 +190,7 @@ namespace RhythmHeavenMania.Games.BuiltToScaleDS
             var pianoPitch = Mathf.Pow(2f, (1f / 12f) * semiTones) *Conductor.instance.musicSource.pitch;
             var pianoSource = Jukebox.PlayOneShotGame("builtToScaleDS/Piano", -1, pianoPitch, 0.8f, true);
 
-            BeatAction.New(gameObject, new List<BeatAction.Action>()
-            {
-                new BeatAction.Action(beat + length, delegate { Jukebox.KillLoop(pianoSource, 0.1f); })
-            });
+            Jukebox.SetLoopParams(pianoSource, beat + length, 0.1f);
         }
     }
 }

Assets/Scripts/Util/Jukebox.cs

@@ -107,6 +107,17 @@ namespace RhythmHeavenMania.Util
             return null;
         }
 
+        // Loops play forever by default unless you set their params via this method.
+        public static void SetLoopParams(AudioSource source, float endBeat, float fadeTime)
+        {
+            if (source == null)
+                return;
+            
+            var snd = source.GetComponent<Sound>();
+            snd.loopEndBeat = endBeat;
+            snd.fadeTime = fadeTime;
+        }
+
         public static void KillLoop(AudioSource source, float fadeTime)
         {
             // Safeguard against previously-destroyed sounds.

Assets/Scripts/Util/Sound.cs

@@ -15,6 +15,9 @@ namespace RhythmHeavenMania.Util
         public double scheduledTime;
 
         public bool looping;
+        public float loopEndBeat = -1;
+        public float fadeTime;
+        int loopIndex = 0;
 
         private AudioSource audioSource;
 
@@ -73,6 +76,18 @@ namespace RhythmHeavenMania.Util
                     }
                 }
             }
+
+            if (loopIndex < 1)
+            {
+                if (looping && loopEndBeat != -1)
+                {
+                    if (Conductor.instance.songPositionInBeats > loopEndBeat)
+                    {
+                        KillLoop(fadeTime);
+                        loopIndex++;
+                    }
+                }
+            }
         }
 
         IEnumerator NotRelyOnBeatSound()