diff --git a/LEGO1/lego/legoomni/src/audio/lego3dwavepresenter.cpp b/LEGO1/lego/legoomni/src/audio/lego3dwavepresenter.cpp
index 580f3405..96fa7f2d 100644
--- a/LEGO1/lego/legoomni/src/audio/lego3dwavepresenter.cpp
+++ b/LEGO1/lego/legoomni/src/audio/lego3dwavepresenter.cpp
@@ -1,26 +1,43 @@
 #include "lego3dwavepresenter.h"
 
-// STUB: LEGO1 0x1004a7c0
+#include "mxomni.h"
+
+// FUNCTION: LEGO1 0x1004a7c0
 MxResult Lego3DWavePresenter::AddToManager()
 {
-	// TODO
-	return SUCCESS;
+	MxResult result = MxWavePresenter::AddToManager();
+	MxWavePresenter::Init();
+	if (MxOmni::IsSound3D()) {
+		m_is3d = TRUE;
+	}
+	return result;
 }
 
-// STUB: LEGO1 0x1004a7f0
+// FUNCTION: LEGO1 0x1004a7f0
 void Lego3DWavePresenter::Destroy()
 {
-	// TODO
+	MxWavePresenter::Destroy();
+	MxWavePresenter::Init();
+
+	if (MxOmni::IsSound3D()) {
+		m_is3d = TRUE;
+	}
 }
 
 // STUB: LEGO1 0x1004a810
 void Lego3DWavePresenter::StartingTickle()
 {
+	if (MxOmni::IsSound3D()) {
+		m_is3d = TRUE;
+	}
+	MxWavePresenter::StartingTickle();
+
 	// TODO
 }
 
 // STUB: LEGO1 0x1004a8b0
 void Lego3DWavePresenter::StreamingTickle()
 {
+	MxWavePresenter::StreamingTickle();
 	// TODO
 }
diff --git a/LEGO1/lego/legoomni/src/video/legohideanimpresenter.cpp b/LEGO1/lego/legoomni/src/video/legohideanimpresenter.cpp
index 81a854f8..5bb59615 100644
--- a/LEGO1/lego/legoomni/src/video/legohideanimpresenter.cpp
+++ b/LEGO1/lego/legoomni/src/video/legohideanimpresenter.cpp
@@ -38,11 +38,10 @@ void LegoHideAnimPresenter::Destroy(MxBool p_fromDestructor)
 	}
 }
 
-// STUB: LEGO1 0x1006dab0
+// FUNCTION: LEGO1 0x1006dab0
 MxResult LegoHideAnimPresenter::AddToManager()
 {
-	// TODO
-	return SUCCESS;
+	return LegoAnimPresenter::AddToManager();
 }
 
 // FUNCTION: LEGO1 0x1006dac0
diff --git a/LEGO1/lego/legoomni/src/video/legopartpresenter.cpp b/LEGO1/lego/legoomni/src/video/legopartpresenter.cpp
index 545d2f65..d74640d7 100644
--- a/LEGO1/lego/legoomni/src/video/legopartpresenter.cpp
+++ b/LEGO1/lego/legoomni/src/video/legopartpresenter.cpp
@@ -1,5 +1,8 @@
 #include "legopartpresenter.h"
 
+#include "legoomni.h"
+#include "legovideomanager.h"
+
 // GLOBAL: LEGO1 0x100f7aa0
 int g_partPresenterConfig1 = 1;
 
@@ -19,10 +22,10 @@ void LegoPartPresenter::configureLegoPartPresenter(MxS32 p_partPresenterConfig1,
 	g_partPresenterConfig2 = p_partPresenterConfig2;
 }
 
-// STUB: LEGO1 0x1007c9b0
+// FUNCTION: LEGO1 0x1007c9b0
 MxResult LegoPartPresenter::AddToManager()
 {
-	// TODO
+	VideoManager()->RegisterPresenter(*this);
 	return SUCCESS;
 }
 
diff --git a/LEGO1/omni/include/mxwavepresenter.h b/LEGO1/omni/include/mxwavepresenter.h
index 982914bf..27bd1824 100644
--- a/LEGO1/omni/include/mxwavepresenter.h
+++ b/LEGO1/omni/include/mxwavepresenter.h
@@ -60,10 +60,9 @@ class MxWavePresenter : public MxSoundPresenter {
 	// MxWavePresenter::`scalar deleting destructor'
 
 protected:
+	void Init();
 	void Destroy(MxBool p_fromDestructor);
 
-private:
-	void Init();
 	MxS8 GetPlayedChunks();
 	MxBool FUN_100b1ba0();
 	void WriteToSoundBuffer(void* p_audioPtr, MxU32 p_length);
@@ -74,7 +73,7 @@ class MxWavePresenter : public MxSoundPresenter {
 	MxU32 m_lockSize;               // 0x60
 	MxU8 m_writtenChunks;           // 0x64
 	MxBool m_started;               // 0x65
-	MxBool m_unk0x66;               // 0x66
+	MxBool m_is3d;                  // 0x66
 	MxS8 m_silenceData;             // 0x67
 	MxBool m_paused;                // 0x68
 };
diff --git a/LEGO1/omni/src/audio/mxwavepresenter.cpp b/LEGO1/omni/src/audio/mxwavepresenter.cpp
index cb9f4d56..853441a7 100644
--- a/LEGO1/omni/src/audio/mxwavepresenter.cpp
+++ b/LEGO1/omni/src/audio/mxwavepresenter.cpp
@@ -20,7 +20,7 @@ void MxWavePresenter::Init()
 	m_lockSize = 0;
 	m_writtenChunks = 0;
 	m_started = FALSE;
-	m_unk0x66 = FALSE;
+	m_is3d = FALSE;
 	m_paused = FALSE;
 }
 
@@ -156,7 +156,7 @@ void MxWavePresenter::StartingTickle()
 		memset(&desc, 0, sizeof(desc));
 		desc.dwSize = sizeof(desc);
 
-		if (m_unk0x66) {
+		if (m_is3d) {
 			desc.dwFlags = DSBCAPS_CTRLFREQUENCY | DSBCAPS_CTRL3D | DSBCAPS_CTRLVOLUME;
 		}
 		else {