diff --git a/src/Ryujinx.Horizon/Am/Ipc/Controllers/AudioController.cs b/src/Ryujinx.Horizon/Am/Ipc/Controllers/AudioController.cs
new file mode 100644
index 0000000000..ab4f6c6302
--- /dev/null
+++ b/src/Ryujinx.Horizon/Am/Ipc/Controllers/AudioController.cs
@@ -0,0 +1,49 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Am;
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Am.Ipc.Controllers
+{
+    partial class AudioController : IAudioController
+    {
+        private float _mainAppletVolume;
+        private float _libraryAppletVolume;
+
+        [CmifCommand(0)]
+        public Result SetExpectedMasterVolume(float mainAppletVolume, float libraryAppletVolume)
+        {
+            _mainAppletVolume = mainAppletVolume;
+            _libraryAppletVolume = libraryAppletVolume;
+
+            return Result.Success;
+        }
+
+        [CmifCommand(1)]
+        public Result GetMainAppletExpectedMasterVolume(out float mainAppletVolume)
+        {
+            mainAppletVolume = _mainAppletVolume;
+
+            return Result.Success;
+        }
+
+        [CmifCommand(2)]
+        public Result GetLibraryAppletExpectedMasterVolume(out float libraryAppletVolume)
+        {
+            libraryAppletVolume = _libraryAppletVolume;
+
+            return Result.Success;
+        }
+
+        [CmifCommand(3)]
+        public Result ChangeMainAppletMasterVolume(float volume, ulong value)
+        {
+            return Result.Success;
+        }
+
+        [CmifCommand(4)]
+        public Result SetTransparentVolumeRate(float volume)
+        {
+            return Result.Success;
+        }
+    }
+}
diff --git a/src/Ryujinx.Horizon/Am/Ipc/Controllers/WindowController.cs b/src/Ryujinx.Horizon/Am/Ipc/Controllers/WindowController.cs
new file mode 100644
index 0000000000..193ed75e48
--- /dev/null
+++ b/src/Ryujinx.Horizon/Am/Ipc/Controllers/WindowController.cs
@@ -0,0 +1,57 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Am;
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Am.Ipc.Controllers
+{
+    partial class WindowController : IWindowController
+    {
+        [CmifCommand(0)]
+        public Result CreateWindow()
+        {
+            throw new System.NotImplementedException();
+        }
+
+        [CmifCommand(1)]
+        public Result GetAppletResourceUserId()
+        {
+            throw new System.NotImplementedException();
+        }
+
+        [CmifCommand(2)]
+        public Result GetAppletResourceUserIdOfCallerApplet()
+        {
+            throw new System.NotImplementedException();
+        }
+
+        [CmifCommand(10)]
+        public Result AcquireForegroundRights()
+        {
+            throw new System.NotImplementedException();
+        }
+
+        [CmifCommand(11)]
+        public Result ReleaseForegroundRights()
+        {
+            throw new System.NotImplementedException();
+        }
+
+        [CmifCommand(12)]
+        public Result RejectToChangeIntoBackground()
+        {
+            throw new System.NotImplementedException();
+        }
+
+        [CmifCommand(20)]
+        public Result SetAppletWindowVisibility(bool visibility)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        [CmifCommand(21)]
+        public Result SetAppletGpuTimeSlice(long gpuTime)
+        {
+            throw new System.NotImplementedException();
+        }
+    }
+}
diff --git a/src/Ryujinx.Horizon/Am/Ipc/Proxies/ApplicationProxy.cs b/src/Ryujinx.Horizon/Am/Ipc/Proxies/ApplicationProxy.cs
index 114075c033..e05229517f 100644
--- a/src/Ryujinx.Horizon/Am/Ipc/Proxies/ApplicationProxy.cs
+++ b/src/Ryujinx.Horizon/Am/Ipc/Proxies/ApplicationProxy.cs
@@ -24,15 +24,19 @@ namespace Ryujinx.Horizon.Am.Ipc.Proxies
         }
 
         [CmifCommand(2)]
-        public Result GetWindowController()
+        public Result GetWindowController(out IWindowController windowController)
         {
-            throw new System.NotImplementedException();
+            windowController = new WindowController();
+
+            return Result.Success;
         }
 
         [CmifCommand(3)]
-        public Result GetAudioController()
+        public Result GetAudioController(out IAudioController audioController)
         {
-            throw new System.NotImplementedException();
+            audioController = new AudioController();
+
+            return Result.Success;
         }
 
         [CmifCommand(4)]
diff --git a/src/Ryujinx.Horizon/Am/Ipc/Proxies/LibraryAppletProxy.cs b/src/Ryujinx.Horizon/Am/Ipc/Proxies/LibraryAppletProxy.cs
index 38d0af67d9..2cc7434c8e 100644
--- a/src/Ryujinx.Horizon/Am/Ipc/Proxies/LibraryAppletProxy.cs
+++ b/src/Ryujinx.Horizon/Am/Ipc/Proxies/LibraryAppletProxy.cs
@@ -24,15 +24,19 @@ namespace Ryujinx.Horizon.Am.Ipc.Proxies
         }
 
         [CmifCommand(2)]
-        public Result GetWindowController()
+        public Result GetWindowController(out IWindowController windowController)
         {
-            throw new System.NotImplementedException();
+            windowController = new WindowController();
+
+            return Result.Success;
         }
 
         [CmifCommand(3)]
-        public Result GetAudioController()
+        public Result GetAudioController(out IAudioController audioController)
         {
-            throw new System.NotImplementedException();
+            audioController = new AudioController();
+
+            return Result.Success;
         }
 
         [CmifCommand(4)]
diff --git a/src/Ryujinx.Horizon/Am/Ipc/Proxies/OverlayAppletProxy.cs b/src/Ryujinx.Horizon/Am/Ipc/Proxies/OverlayAppletProxy.cs
index 8ec6000d11..1622d93ea6 100644
--- a/src/Ryujinx.Horizon/Am/Ipc/Proxies/OverlayAppletProxy.cs
+++ b/src/Ryujinx.Horizon/Am/Ipc/Proxies/OverlayAppletProxy.cs
@@ -24,15 +24,19 @@ namespace Ryujinx.Horizon.Am.Ipc.Proxies
         }
 
         [CmifCommand(2)]
-        public Result GetWindowController()
+        public Result GetWindowController(out IWindowController windowController)
         {
-            throw new System.NotImplementedException();
+            windowController = new WindowController();
+
+            return Result.Success;
         }
 
         [CmifCommand(3)]
-        public Result GetAudioController()
+        public Result GetAudioController(out IAudioController audioController)
         {
-            throw new System.NotImplementedException();
+            audioController = new AudioController();
+
+            return Result.Success;
         }
 
         [CmifCommand(4)]
diff --git a/src/Ryujinx.Horizon/Am/Ipc/Proxies/SystemAppletProxy.cs b/src/Ryujinx.Horizon/Am/Ipc/Proxies/SystemAppletProxy.cs
index e8387417cd..d031568252 100644
--- a/src/Ryujinx.Horizon/Am/Ipc/Proxies/SystemAppletProxy.cs
+++ b/src/Ryujinx.Horizon/Am/Ipc/Proxies/SystemAppletProxy.cs
@@ -24,15 +24,19 @@ namespace Ryujinx.Horizon.Am.Ipc.Proxies
         }
 
         [CmifCommand(2)]
-        public Result GetWindowController()
+        public Result GetWindowController(out IWindowController windowController)
         {
-            throw new System.NotImplementedException();
+            windowController = new WindowController();
+
+            return Result.Success;
         }
 
         [CmifCommand(3)]
-        public Result GetAudioController()
+        public Result GetAudioController(out IAudioController audioController)
         {
-            throw new System.NotImplementedException();
+            audioController = new AudioController();
+
+            return Result.Success;
         }
 
         [CmifCommand(4)]
diff --git a/src/Ryujinx.Horizon/Sdk/Am/IApplicationProxy.cs b/src/Ryujinx.Horizon/Sdk/Am/IApplicationProxy.cs
index 4c9a169521..10f9a79b30 100644
--- a/src/Ryujinx.Horizon/Sdk/Am/IApplicationProxy.cs
+++ b/src/Ryujinx.Horizon/Sdk/Am/IApplicationProxy.cs
@@ -6,8 +6,8 @@ namespace Ryujinx.Horizon.Sdk.Am
     {
         Result GetCommonStateGetter(out ICommonStateGetter commonStateGetter);
         Result GetSelfController(out ISelfController selfController);
-        Result GetWindowController();
-        Result GetAudioController();
+        Result GetWindowController(out IWindowController windowController);
+        Result GetAudioController(out IAudioController audioController);
         Result GetDisplayController();
         Result GetProcessWindingController();
         Result GetLibraryAppletCreator();
diff --git a/src/Ryujinx.Horizon/Sdk/Am/IAudioController.cs b/src/Ryujinx.Horizon/Sdk/Am/IAudioController.cs
new file mode 100644
index 0000000000..1ef3f01114
--- /dev/null
+++ b/src/Ryujinx.Horizon/Sdk/Am/IAudioController.cs
@@ -0,0 +1,13 @@
+using Ryujinx.Horizon.Common;
+
+namespace Ryujinx.Horizon.Sdk.Am
+{
+    public interface IAudioController
+    {
+        Result SetExpectedMasterVolume(float mainAppletVolume, float libraryAppletVolume);
+        Result GetMainAppletExpectedMasterVolume(out float mainAppletVolume);
+        Result GetLibraryAppletExpectedMasterVolume(out float libraryAppletVolume);
+        Result ChangeMainAppletMasterVolume(float volume, ulong value);
+        Result SetTransparentVolumeRate(float volume);
+    }
+}
diff --git a/src/Ryujinx.Horizon/Sdk/Am/ILibraryAppletProxy.cs b/src/Ryujinx.Horizon/Sdk/Am/ILibraryAppletProxy.cs
index 869edcd0d0..0efca6d2f2 100644
--- a/src/Ryujinx.Horizon/Sdk/Am/ILibraryAppletProxy.cs
+++ b/src/Ryujinx.Horizon/Sdk/Am/ILibraryAppletProxy.cs
@@ -6,8 +6,8 @@ namespace Ryujinx.Horizon.Sdk.Am
     {
         Result GetCommonStateGetter(out ICommonStateGetter commonStateGetter);
         Result GetSelfController(out ISelfController selfController);
-        Result GetWindowController();
-        Result GetAudioController();
+        Result GetWindowController(out IWindowController windowController);
+        Result GetAudioController(out IAudioController audioController);
         Result GetDisplayController();
         Result GetProcessWindingController();
         Result GetLibraryAppletCreator();
diff --git a/src/Ryujinx.Horizon/Sdk/Am/IOverlayAppletProxy.cs b/src/Ryujinx.Horizon/Sdk/Am/IOverlayAppletProxy.cs
index cc79229d2c..7f06323212 100644
--- a/src/Ryujinx.Horizon/Sdk/Am/IOverlayAppletProxy.cs
+++ b/src/Ryujinx.Horizon/Sdk/Am/IOverlayAppletProxy.cs
@@ -6,8 +6,8 @@ namespace Ryujinx.Horizon.Sdk.Am
     {
         Result GetCommonStateGetter(out ICommonStateGetter commonStateGetter);
         Result GetSelfController(out ISelfController selfController);
-        Result GetWindowController();
-        Result GetAudioController();
+        Result GetWindowController(out IWindowController windowController);
+        Result GetAudioController(out IAudioController audioController);
         Result GetDisplayController();
         Result GetProcessWindingController();
         Result GetLibraryAppletCreator();
diff --git a/src/Ryujinx.Horizon/Sdk/Am/ISystemAppletProxy.cs b/src/Ryujinx.Horizon/Sdk/Am/ISystemAppletProxy.cs
index 8c2fd7e0d4..a0d632c3bf 100644
--- a/src/Ryujinx.Horizon/Sdk/Am/ISystemAppletProxy.cs
+++ b/src/Ryujinx.Horizon/Sdk/Am/ISystemAppletProxy.cs
@@ -6,8 +6,8 @@ namespace Ryujinx.Horizon.Sdk.Am
     {
         Result GetCommonStateGetter(out ICommonStateGetter commonStateGetter);
         Result GetSelfController(out ISelfController selfController);
-        Result GetWindowController();
-        Result GetAudioController();
+        Result GetWindowController(out IWindowController windowController);
+        Result GetAudioController(out IAudioController audioController);
         Result GetDisplayController();
         Result GetProcessWindingController();
         Result GetLibraryAppletCreator();
diff --git a/src/Ryujinx.Horizon/Sdk/Am/IWindowController.cs b/src/Ryujinx.Horizon/Sdk/Am/IWindowController.cs
new file mode 100644
index 0000000000..82c7a2002e
--- /dev/null
+++ b/src/Ryujinx.Horizon/Sdk/Am/IWindowController.cs
@@ -0,0 +1,17 @@
+using Ryujinx.Horizon.Common;
+using System;
+
+namespace Ryujinx.Horizon.Sdk.Am
+{
+    public interface IWindowController
+    {
+        Result CreateWindow();
+        Result GetAppletResourceUserId();
+        Result GetAppletResourceUserIdOfCallerApplet();
+        Result AcquireForegroundRights();
+        Result ReleaseForegroundRights();
+        Result RejectToChangeIntoBackground();
+        Result SetAppletWindowVisibility(bool visibility);
+        Result SetAppletGpuTimeSlice(Int64 gpuTime);
+    }
+}