diff --git a/CMakeLists.txt b/CMakeLists.txt
index 202e2b7d..3a47fc78 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -93,6 +93,7 @@ add_library(lego1 SHARED
   LEGO1/motorcycle.cpp
   LEGO1/mxatomid.cpp
   LEGO1/mxatomidcounter.cpp
+  LEGO1/mxaudiomanager.cpp
   LEGO1/mxaudiopresenter.cpp
   LEGO1/mxautolocker.cpp
   LEGO1/mxbackgroundaudiomanager.cpp
@@ -159,7 +160,6 @@ add_library(lego1 SHARED
   LEGO1/mxticklemanager.cpp
   LEGO1/mxtimer.cpp
   LEGO1/mxtransitionmanager.cpp
-  LEGO1/mxunknown100dc6e0.cpp
   LEGO1/mxvariable.cpp
   LEGO1/mxvariabletable.cpp
   LEGO1/mxvector.cpp
diff --git a/LEGO1/mxaudiomanager.cpp b/LEGO1/mxaudiomanager.cpp
new file mode 100644
index 00000000..c7ecdc12
--- /dev/null
+++ b/LEGO1/mxaudiomanager.cpp
@@ -0,0 +1,64 @@
+#include "mxaudiomanager.h"
+
+DECOMP_SIZE_ASSERT(MxAudioManager, 0x30);
+
+// GLOBAL: LEGO1 0x10102108
+MxS32 MxAudioManager::g_unkCount = 0;
+
+// OFFSET: LEGO1 0x100b8d00
+MxAudioManager::MxAudioManager()
+{
+  Init();
+}
+
+// OFFSET: LEGO1 0x100b8d90
+MxAudioManager::~MxAudioManager()
+{
+  LockedReinitialize(TRUE);
+}
+
+// OFFSET: LEGO1 0x100b8df0
+void MxAudioManager::Init()
+{
+  this->m_unk2c = 100;
+}
+
+// OFFSET: LEGO1 0x100b8e00
+void MxAudioManager::LockedReinitialize(MxBool p_skipDestroy)
+{
+  this->m_criticalSection.Enter();
+  g_unkCount--;
+  Init();
+  this->m_criticalSection.Leave();
+
+  if (!p_skipDestroy)
+    MxMediaManager::Destroy();
+}
+
+// OFFSET: LEGO1 0x100b8e40
+MxResult MxAudioManager::InitPresenters()
+{
+  MxResult result = FAILURE;
+  MxBool success = FALSE;
+
+  if (MxMediaManager::InitPresenters() == SUCCESS) {
+    this->m_criticalSection.Enter();
+    success = TRUE;
+    result = SUCCESS;
+    g_unkCount++;
+  }
+
+  if (result)
+    Destroy();
+
+  if (success)
+    this->m_criticalSection.Leave();
+
+  return result;
+}
+
+// OFFSET: LEGO1 0x100b8e90
+void MxAudioManager::Destroy()
+{
+  LockedReinitialize(FALSE);
+}
\ No newline at end of file
diff --git a/LEGO1/mxaudiomanager.h b/LEGO1/mxaudiomanager.h
new file mode 100644
index 00000000..1403f36d
--- /dev/null
+++ b/LEGO1/mxaudiomanager.h
@@ -0,0 +1,28 @@
+#ifndef MXAUDIOMANAGER_H
+#define MXAUDIOMANAGER_H
+
+#include "decomp.h"
+#include "mxmediamanager.h"
+
+// VTABLE 0x100dc6e0
+class MxAudioManager : public MxMediaManager
+{
+public:
+  MxAudioManager();
+  virtual ~MxAudioManager() override;
+
+  virtual MxResult InitPresenters(); // vtable+14
+  virtual void Destroy(); // vtable+18
+
+private:
+  void LockedReinitialize(MxBool);
+
+  static MxS32 g_unkCount;
+
+protected:
+  void Init();
+
+  undefined4 m_unk2c;
+};
+
+#endif // MXAUDIOMANAGER_H
diff --git a/LEGO1/mxsoundmanager.h b/LEGO1/mxsoundmanager.h
index 4d74fa95..06dc9d5f 100644
--- a/LEGO1/mxsoundmanager.h
+++ b/LEGO1/mxsoundmanager.h
@@ -1,12 +1,12 @@
 #ifndef MXSOUNDMANAGER_H
 #define MXSOUNDMANAGER_H
 
-#include "mxunknown100dc6e0.h"
+#include "mxaudiomanager.h"
 
 // VTABLE 0x100dc128
 // SIZE 0x3c
-// Base vtables are: MxCore -> 0x100dc6b0 -> 0x100dc6e0 -> MxSoundManager
-class MxSoundManager : public MxUnknown100dc6e0
+// Base vtables are: MxCore -> 0x100dc6b0 -> MxAudioManager -> MxSoundManager
+class MxSoundManager : public MxAudioManager
 {
 public:
   MxSoundManager();
diff --git a/LEGO1/mxunknown100dc6e0.cpp b/LEGO1/mxunknown100dc6e0.cpp
deleted file mode 100644
index b896e89b..00000000
--- a/LEGO1/mxunknown100dc6e0.cpp
+++ /dev/null
@@ -1,19 +0,0 @@
-#include "mxunknown100dc6e0.h"
-
-// OFFSET: LEGO1 0x100b8d00
-MxUnknown100dc6e0::MxUnknown100dc6e0()
-{
-    Init();
-}
-
-// OFFSET: LEGO1 0x100b8d90 STUB
-MxUnknown100dc6e0::~MxUnknown100dc6e0()
-{
-  // TODO
-}
-
-// OFFSET: LEGO1 0x100b8df0
-void MxUnknown100dc6e0::Init()
-{
-  this->m_unk2c = 100;
-}
diff --git a/LEGO1/mxunknown100dc6e0.h b/LEGO1/mxunknown100dc6e0.h
deleted file mode 100644
index 056e1fcd..00000000
--- a/LEGO1/mxunknown100dc6e0.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#ifndef MXUNKNOWN100DC6E0_H
-#define MXUNKNOWN100DC6E0_H
-
-#include "mxmediamanager.h"
-
-// VTABLE 0x100dc6e0
-class MxUnknown100dc6e0 : public MxMediaManager
-{
-public:
-  MxUnknown100dc6e0();
-  virtual ~MxUnknown100dc6e0() override;
-
-protected:
-  void Init();
-
-  int m_unk2c;
-};
-
-#endif // MXUNKNOWN100DC6E0_H