Give GML scripts some love.

gamemaker/objects/AUDIO/CleanUp_0.gml

@@ -1 +1,17 @@
+/// @description Clean up all resources when the game is about to end.
+
+/* Destroy sound instances first: */
+// sndInst.Stop();
+// sndInst.Destroy();
+// sndInst = undefined;
+
+/* Only then destroy static sounds: */
+// snd.Destroy();
+// snd = undefined;
+
+/* And only then, destroy effect chains */
+effChain.Destroy();
+effChain = undefined;
+
+/* Finish up the system */
 FAudioGMS_Destroy();

gamemaker/objects/AUDIO/Create_0.gml

@@ -1,6 +1,15 @@
+/// @description Initialize audio.
+
+/* First initialize the system: */
 var spatialDistanceScale = 50; // makes "3D" audio louder
-FAudioGMS_Init(spatialDistanceScale, 1 / 60);
+var timestep = game_get_speed(gamespeed_microseconds) / 1000000; // default, autodetect from GM timestep.
+FAudioGMS_Init(spatialDistanceScale, timestep);
 
 /* Init Effects Chains Here */
+effChain = new EffectChain();
+effChain.AddDefaultReverb();
 
 /* Load Audio Assets Here */
+// snd = LoadStaticSound("go-go-go-tigerblood.wav");
+// sndInst = snd.Play();
+// sndInst.SetEffectChain(effChain, 1); // apply default reverb to the instance.

gamemaker/objects/AUDIO/Step_2.gml

@@ -1 +1,2 @@
+/// @description MUST be called once per frame!
 FAudioGMS_Update();

gamemaker/scripts/FAudioGMS_Scripts/FAudioGMS_Scripts.gml

@@ -88,10 +88,10 @@ function StaticSound(_staticSoundID) constructor
 // The audio is streamed off the disk, so only a small amount of memory is used at a time.
 // Good for things like music or voiceover playback.
 // Note that StreamingSounds are SoundInstances.
-function LoadStreamingSound(filename)
+function LoadStreamingSound(filename, bufferSizeInBytes = 0)
 {
 	var filePath = GetPathPrepend() + "audio/streaming/" + filename;
-	soundInstanceID = FAudioGMS_StreamingSound_LoadOGG(filePath);
+	soundInstanceID = FAudioGMS_StreamingSound_LoadOGG(filePath, bufferSizeInBytes);
 	return new SoundInstance(soundInstanceID);
 }
 
@@ -129,6 +129,12 @@ function SoundInstance(_soundInstanceID) constructor
 		FAudioGMS_SoundInstance_Set3DVelocity(soundInstanceID, xVelocity, yVelocity, zVelocity);
 	}
 	
+	// Sets the 3-dimensional orientation of the sound.
+	static Set3DOrientation = function(xFront, yFront, zFront, xTop, yTop, zTop)
+	{
+		FAudioGMS_SoundInstance_Set3DOrientation(soundInstanceID, xFront, yFront, zFront, xTop, yTop, zTop);
+	}
+
 	// Sets whether the sound instance loops (true) or does not (false).
 	static SetLoop = function(loop)
 	{
@@ -168,6 +174,12 @@ function SoundInstance(_soundInstanceID) constructor
 		FAudioGMS_SoundInstance_SetTrackPositionInSeconds(soundInstanceID, seconds);
 	}
 	
+	// Queues this sound instance for playing in sync.
+	static QueueSyncPlay = function()
+	{
+		FAudioGMS_SoundInstance_QueueSyncPlay(soundInstanceID);	
+	}
+
 	// Sets the playback region for the sound instance.
 	static SetPlayRegion = function(loopStartInMilliseconds, loopEndInMilliseconds)
 	{
@@ -263,6 +275,12 @@ function SoundInstance(_soundInstanceID) constructor
 	SetVolume(1);
 }
 
+// Plays the sound instance queue.
+function SyncPlay()
+{
+	FAudioGMS_SoundInstance_SyncPlay();
+}
+
 // Effect chains allow you to modify sound playback using audio effects.
 // Right now only reverb is implemented, but more effects will probably come later.
 function EffectChain() constructor
@@ -348,6 +366,12 @@ function SetListenerVelocity(xVelocity, yVelocity, zVelocity)
 	FAudioGMS_SetListenerVelocity(xVelocity, yVelocity, zVelocity);
 }
 
+// Sets the orientation of the listener for 3D audio.
+function SetListenerOrientation(xFront, yFront, zFront, xTop, yTop, zTop)
+{
+	FAudioGMS_SetListenerOrientation(xFront, yFront, zFront, xTop, yTop, zTop);
+}
+
 // Stops all audio playback.
 function StopAllAudio()
 {