diff --git a/LEGO1/act2brick.cpp b/LEGO1/act2brick.cpp
index dde79d0b..1ec4f139 100644
--- a/LEGO1/act2brick.cpp
+++ b/LEGO1/act2brick.cpp
@@ -25,5 +25,5 @@ MxResult Act2Brick::Tickle()
 {
   // TODO
 
-  return 0;
+  return SUCCESS;
 }
diff --git a/LEGO1/jukeboxstate.cpp b/LEGO1/jukeboxstate.cpp
index 25b6dc90..d4a2511f 100644
--- a/LEGO1/jukeboxstate.cpp
+++ b/LEGO1/jukeboxstate.cpp
@@ -1 +1,6 @@
 #include "jukeboxstate.h"
+
+// OFFSET: LEGO1 0x1000f300
+MxBool JukeBoxState::VTable0x14() {
+  return FALSE;
+}
diff --git a/LEGO1/jukeboxstate.h b/LEGO1/jukeboxstate.h
index 75640fe3..d2b37e38 100644
--- a/LEGO1/jukeboxstate.h
+++ b/LEGO1/jukeboxstate.h
@@ -21,6 +21,8 @@ class JukeBoxState : public LegoState
     return !strcmp(name, JukeBoxState::ClassName()) || LegoState::IsA(name);
   }
 
+  virtual MxBool VTable0x14() override; // vtable+0x14
+
 };
 
 #endif // JUKEBOXSTATE_H
diff --git a/LEGO1/legoanimationmanager.cpp b/LEGO1/legoanimationmanager.cpp
index 20e0a0e3..bf182ef5 100644
--- a/LEGO1/legoanimationmanager.cpp
+++ b/LEGO1/legoanimationmanager.cpp
@@ -27,7 +27,7 @@ MxResult LegoAnimationManager::Tickle()
 {
   // TODO
 
-  return 0;
+  return SUCCESS;
 }
 
 // OFFSET: LEGO1 0x1005f130 STUB
diff --git a/LEGO1/legoomni.cpp b/LEGO1/legoomni.cpp
index d4ab47ea..8786145e 100644
--- a/LEGO1/legoomni.cpp
+++ b/LEGO1/legoomni.cpp
@@ -6,10 +6,14 @@
 #include "legoutil.h"
 #include "legoobjectfactory.h"
 #include "legoinputmanager.h"
+#include "legoworld.h"
 
 // 0x100f4588
 MxAtomId *g_nocdSourceName = NULL;
 
+// 0x100f456c
+MxAtomId *g_jukeboxScript = NULL;
+
 // 0x101020e8
 void (*g_omniUserMessage)(const char *,int);
 
@@ -25,10 +29,11 @@ LegoOmni::~LegoOmni()
   Destroy();
 }
 
-// OFFSET: LEGO1 0x1005b560 STUB
+// OFFSET: LEGO1 0x1005b560
 void LegoOmni::CreateBackgroundAudio()
 {
-  // TODO
+  if (m_bkgAudioManager)
+    m_bkgAudioManager->Create(*g_jukeboxScript, 100);
 }
 
 // OFFSET: LEGO1 0x1005af10 STUB
@@ -307,9 +312,10 @@ MxResult LegoOmni::Start(MxDSAction* action)
   return result;
 }
 
-void LegoOmni::DeleteObject(MxDSAction &ds)
+MxResult LegoOmni::DeleteObject(MxDSAction &ds)
 {
   // FIXME: Stub
+  return FAILURE;
 }
 
 MxBool LegoOmni::DoesEntityExist(MxDSAction &ds)
@@ -329,9 +335,11 @@ int LegoOmni::vtable0x30(char*, int, MxCore*)
   return 0;
 }
 
-void LegoOmni::NotifyCurrentEntity()
+// OFFSET: LEGO1 0x1005b3a0
+void LegoOmni::NotifyCurrentEntity(MxNotificationParam *p_param)
 {
-  // FIXME: Stub
+  if (m_currentWorld)
+    NotificationManager()->Send(m_currentWorld, p_param);
 }
 
 // OFFSET: LEGO1 0x1005b640
diff --git a/LEGO1/legoomni.h b/LEGO1/legoomni.h
index 37d3ef4b..8a61c2df 100644
--- a/LEGO1/legoomni.h
+++ b/LEGO1/legoomni.h
@@ -57,11 +57,11 @@ class LegoOmni : public MxOmni
   virtual MxResult Create(COMPAT_CONST MxOmniCreateParam &p) override; // vtable+18
   virtual void Destroy() override; // vtable+1c
   virtual MxResult Start(MxDSAction* action) override;
-  virtual void DeleteObject(MxDSAction &ds) override;
+  virtual MxResult DeleteObject(MxDSAction &ds) override;
   virtual MxBool DoesEntityExist(MxDSAction &ds) override;
   virtual void vtable0x2c() override;
   virtual int vtable0x30(char*, int, MxCore*) override;
-  virtual void NotifyCurrentEntity() override;
+  virtual void NotifyCurrentEntity(MxNotificationParam *p_param) override;
   virtual void StartTimer() override;
   virtual void StopTimer() override;
 
diff --git a/LEGO1/legopathcontroller.cpp b/LEGO1/legopathcontroller.cpp
index f8b64109..94a6aa1d 100644
--- a/LEGO1/legopathcontroller.cpp
+++ b/LEGO1/legopathcontroller.cpp
@@ -16,5 +16,5 @@ LegoPathController::~LegoPathController()
 MxResult LegoPathController::Tickle()
 {
   // TODO
-  return 0;
+  return SUCCESS;
 }
diff --git a/LEGO1/legosoundmanager.cpp b/LEGO1/legosoundmanager.cpp
index 01f8fee5..cec30564 100644
--- a/LEGO1/legosoundmanager.cpp
+++ b/LEGO1/legosoundmanager.cpp
@@ -1,20 +1,48 @@
 #include "legosoundmanager.h"
+#include "mxautolocker.h"
 
-// OFFSET: LEGO1 0x100298a0 STUB
+// OFFSET: LEGO1 0x100298a0
 LegoSoundManager::LegoSoundManager()
 {
-  // TODO
+  Init();
 }
 
-// OFFSET: LEGO1 0x10029940 STUB
+// OFFSET: LEGO1 0x10029940
 LegoSoundManager::~LegoSoundManager()
 {
-  // TODO
+  Destroy(TRUE);
+}
+
+// OFFSET: LEGO1 0x1002a390
+void LegoSoundManager::Destroy()
+{
+  Destroy(FALSE);
+}
+
+// OFFSET: LEGO1 0x100299b0 STUB
+void LegoSoundManager::Destroy(MxBool p_fromDestructor)
+{
+
+}
+
+// OFFSET: LEGO1 0x100299f0 STUB
+MxResult LegoSoundManager::Create(MxU32 p_frequencyMS, MxBool p_createThread)
+{
+  return FAILURE;
+}
+
+// OFFSET: LEGO1 0x100299a0
+void LegoSoundManager::Init()
+{
+  unk0x40 = 0;
+  unk0x3c = 0;
 }
 
 // OFFSET: LEGO1 0x1002a3a0 STUB
 MxResult LegoSoundManager::Tickle()
 {
-  // TODO
-  return 0;
+  MxMediaManager::Tickle();
+  MxAutoLocker lock(&this->m_criticalSection);
+
+  return 0; // TODO: call something in unk0x40
 }
diff --git a/LEGO1/legosoundmanager.h b/LEGO1/legosoundmanager.h
index 90e23fba..1f16f497 100644
--- a/LEGO1/legosoundmanager.h
+++ b/LEGO1/legosoundmanager.h
@@ -10,11 +10,17 @@ class LegoSoundManager : public MxSoundManager
 public:
   LegoSoundManager();
   virtual ~LegoSoundManager() override;
+
   virtual MxResult Tickle() override; // vtable+08
+  virtual void Destroy() override; // vtable+18
+  virtual MxResult Create(MxU32 p_frequencyMS, MxBool p_createThread) override; //vtable+0x30
 
 private:
   void Init();
+  void Destroy(MxBool p_fromDestructor);
 
+  undefined4 unk0x3c;
+  undefined4 unk0x40;
 };
 
 #endif // LEGOSOUNDMANAGER_H
diff --git a/LEGO1/mxbackgroundaudiomanager.cpp b/LEGO1/mxbackgroundaudiomanager.cpp
index 40891bef..cbf480fc 100644
--- a/LEGO1/mxbackgroundaudiomanager.cpp
+++ b/LEGO1/mxbackgroundaudiomanager.cpp
@@ -1,6 +1,8 @@
 #include "mxbackgroundaudiomanager.h"
 
 #include "mxomni.h"
+#include "mxstreamer.h"
+#include "mxticklemanager.h"
 
 DECOMP_SIZE_ASSERT(MxBackgroundAudioManager, 0x150)
 
@@ -20,14 +22,29 @@ MxBackgroundAudioManager::MxBackgroundAudioManager()
 // OFFSET: LEGO1 0x1007ec20
 MxBackgroundAudioManager::~MxBackgroundAudioManager()
 {
-  // TODO
+  TickleManager()->UnregisterClient(this);
   NotificationManager()->Unregister(this);
+  DestroyMusic();
 }
 
 // OFFSET: LEGO1 0x1007f470
 void MxBackgroundAudioManager::Stop()
 {
-  // TODO
+  if (m_action2.GetObjectId() != -1)
+    DeleteObject(m_action2);
+
+  m_unk138 = 0;
+  m_action2.SetAtomId(MxAtomId());
+  m_action2.SetObjectId(-1);
+
+  if (m_action1.GetObjectId() != -1)
+    DeleteObject(m_action1);
+
+  m_unka0 = 0;
+  m_action1.SetAtomId(MxAtomId());
+  m_unk148 = 0;
+  m_action1.SetObjectId(-1);
+  m_unk13c = 0;
 }
 
 // OFFSET: LEGO1 0x1007f5f0
@@ -47,3 +64,45 @@ void MxBackgroundAudioManager::Init()
   this->m_unka0 = 0;
   this->m_unk13c = 0;
 }
+
+// OFFSET: LEGO1 0x1007ece0
+MxResult MxBackgroundAudioManager::Create(MxAtomId &p_script, MxU32 p_frequencyMS)
+{
+  MxResult result = OpenMusic(p_script);
+
+  if (result == SUCCESS) {
+    TickleManager()->RegisterClient(this, p_frequencyMS);
+    m_musicEnabled = TRUE;
+  }
+
+  return result;
+}
+
+// OFFSET: LEGO1 0x1007ed20
+MxResult MxBackgroundAudioManager::OpenMusic(MxAtomId &p_script)
+{
+  if (m_script.GetInternal())
+    DestroyMusic();
+
+  MxResult result = FAILURE;
+
+  if (Streamer()->Open(p_script.GetInternal(), 0)) {
+    m_script = p_script;
+    result = SUCCESS;
+  }
+
+  return result;
+}
+
+// OFFSET: LEGO1 0x1007ed70
+void MxBackgroundAudioManager::DestroyMusic()
+{
+  if (m_script.GetInternal()) {
+    MxDSAction ds;
+    ds.SetAtomId(m_script);
+    ds.SetUnknown24(-2);
+    DeleteObject(ds);
+    Streamer()->Close(m_script.GetInternal());
+    m_musicEnabled = FALSE;
+  }
+}
\ No newline at end of file
diff --git a/LEGO1/mxbackgroundaudiomanager.h b/LEGO1/mxbackgroundaudiomanager.h
index a2c4cae3..f81fe854 100644
--- a/LEGO1/mxbackgroundaudiomanager.h
+++ b/LEGO1/mxbackgroundaudiomanager.h
@@ -28,10 +28,13 @@ class MxBackgroundAudioManager : public MxCore
   }
 
   __declspec(dllexport) void Enable(unsigned char p);
+  virtual MxResult Create(MxAtomId &p_script, MxU32 p_frequencyMS);
 
   void Stop();
 private:
   void Init();
+  MxResult OpenMusic(MxAtomId &p_script);
+  void DestroyMusic();
 
   MxBool m_musicEnabled; // 0x8
   MxDSAction m_action1; // 0xc
@@ -42,7 +45,7 @@ class MxBackgroundAudioManager : public MxCore
   MxS32 m_unk140;
   MxS32 m_unk144;
   MxS16 m_unk148;
-  MxAtomId m_unk14c;
+  MxAtomId m_script;
 };
 
 #endif // MXBACKGROUNDAUDIOMANAGER_H
diff --git a/LEGO1/mxbitmap.cpp b/LEGO1/mxbitmap.cpp
index 8f33fc22..1128fded 100644
--- a/LEGO1/mxbitmap.cpp
+++ b/LEGO1/mxbitmap.cpp
@@ -369,7 +369,7 @@ MxResult MxBitmap::SetBitDepth(MxBool p_isHighColor)
 MxResult MxBitmap::StretchBits(HDC p_hdc, MxS32 p_xSrc, MxS32 p_ySrc, MxS32 p_xDest, MxS32 p_yDest, MxS32 p_destWidth, MxS32 p_destHeight)
 {
   // Compression fix?
-  if ((this->m_bmiHeader->biCompression != 16) && (0 < this->m_bmiHeader->biHeight)) {
+  if ((this->m_bmiHeader->biCompression != BI_RGB_TOPDOWN) && (0 < this->m_bmiHeader->biHeight)) {
     p_ySrc = (this->m_bmiHeader->biHeight - p_destHeight) - p_ySrc;
   }
 
diff --git a/LEGO1/mxbitmap.h b/LEGO1/mxbitmap.h
index 53b01e16..6bb1c5fd 100644
--- a/LEGO1/mxbitmap.h
+++ b/LEGO1/mxbitmap.h
@@ -21,6 +21,13 @@ struct MxBITMAPINFO {
   RGBQUAD             bmiColors[256];
 };
 
+// Non-standard value for biCompression in the BITMAPINFOHEADER struct.
+// By default, uncompressed bitmaps (BI_RGB) are stored in bottom-up order.
+// You can specify that the bitmap has top-down order instead by providing
+// a negative number for biHeight. It could be that Mindscape decided on a
+// belt & suspenders approach here.
+#define BI_RGB_TOPDOWN      0x10
+
 // SIZE 0x20
 // VTABLE 0x100dc7b0
 class MxBitmap : public MxCore
@@ -43,6 +50,10 @@ class MxBitmap : public MxCore
   virtual MxResult StretchBits(HDC p_hdc, MxS32 p_xSrc, MxS32 p_ySrc, MxS32 p_xDest, MxS32 p_yDest, MxS32 p_destWidth, MxS32 p_destHeight); // vtable+40
 
   inline BITMAPINFOHEADER *GetBmiHeader() const { return m_bmiHeader; }
+  inline MxLong GetBmiWidth() const { return m_bmiHeader->biWidth; }
+  inline MxLong GetBmiHeight() const { return m_bmiHeader->biHeight; }
+  inline MxLong GetBmiHeightAbs() const { return m_bmiHeader->biHeight > 0 ? m_bmiHeader->biHeight : -m_bmiHeader->biHeight; }
+  inline MxU8 *GetBitmapData() const { return m_data; }
 
 private:
   MxResult ImportColorsToPalette(RGBQUAD*, MxPalette*);
diff --git a/LEGO1/mxdiskstreamcontroller.cpp b/LEGO1/mxdiskstreamcontroller.cpp
index 0c74c3a7..0c1afedf 100644
--- a/LEGO1/mxdiskstreamcontroller.cpp
+++ b/LEGO1/mxdiskstreamcontroller.cpp
@@ -16,7 +16,7 @@ MxDiskStreamController::~MxDiskStreamController()
 MxResult MxDiskStreamController::Tickle()
 {
   // TODO
-  return 0;
+  return SUCCESS;
 }
 
 // OFFSET: LEGO1 0x100c7790 STUB
diff --git a/LEGO1/mxdsbuffer.cpp b/LEGO1/mxdsbuffer.cpp
index 686627a4..b01be21a 100644
--- a/LEGO1/mxdsbuffer.cpp
+++ b/LEGO1/mxdsbuffer.cpp
@@ -1,9 +1,21 @@
 #include "mxdsbuffer.h"
 
+DECOMP_SIZE_ASSERT(MxDSBuffer, 0x34);
+
 // OFFSET: LEGO1 0x100c6470
 MxDSBuffer::MxDSBuffer()
 {
-  // TODO
+  m_unk20 = 0;
+  m_pBuffer = NULL;
+  m_pIntoBuffer = NULL;
+  m_pIntoBuffer2 = NULL;
+  m_unk14 = 0;
+  m_unk18 = 0;
+  m_unk1c = 0;
+  m_writeOffset = 0;
+  m_bytesRemaining = 0;
+  m_mode = 2;
+  m_unk30 = 0;
 }
 
 // OFFSET: LEGO1 0x100c6530
@@ -11,3 +23,15 @@ MxDSBuffer::~MxDSBuffer()
 {
   // TODO
 }
+
+// OFFSET: LEGO1 0x100c6780
+MxResult MxDSBuffer::FUN_100c6780(void* p_buffer, MxU32 p_size)
+{
+  m_pBuffer = p_buffer;
+  m_pIntoBuffer = p_buffer;
+  m_pIntoBuffer2 = p_buffer;
+  m_bytesRemaining = p_size;
+  m_writeOffset = p_size;
+  m_mode = 2;
+  return SUCCESS;
+}
diff --git a/LEGO1/mxdsbuffer.h b/LEGO1/mxdsbuffer.h
index cb962cea..a48c4727 100644
--- a/LEGO1/mxdsbuffer.h
+++ b/LEGO1/mxdsbuffer.h
@@ -12,9 +12,30 @@ class MxDSBuffer : public MxCore
   MxDSBuffer();
   virtual ~MxDSBuffer() override;
 
-private:
-  undefined m_unk08[0x2C];
+  // OFFSET: LEGO1 0x100c6500
+  inline virtual const char *ClassName() const override // vtable+0x0c
+  {
+    // 0x100f0568
+    return "MxDSBuffer";
+  }
 
+  MxResult FUN_100c6780(void* p_buffer, MxU32 p_size);
+
+  inline void* GetBuffer() { return m_pBuffer;}
+  inline MxU32 GetWriteOffset() { return m_writeOffset;}
+
+private:
+  void* m_pBuffer;
+  void* m_pIntoBuffer;
+  void* m_pIntoBuffer2;
+  undefined4 m_unk14;
+  undefined4 m_unk18;
+  undefined4 m_unk1c;
+  undefined2 m_unk20;
+  undefined4 m_mode;
+  MxU32 m_writeOffset;
+  MxU32 m_bytesRemaining;
+  undefined4 m_unk30;
 };
 
 #endif // MXDSBUFFER_H
diff --git a/LEGO1/mxdssource.cpp b/LEGO1/mxdssource.cpp
index 0ede6402..3c725a81 100644
--- a/LEGO1/mxdssource.cpp
+++ b/LEGO1/mxdssource.cpp
@@ -1,10 +1,10 @@
 #include "mxdssource.h"
+#include "mxdsbuffer.h"
 
 // OFFSET: LEGO1 0x100bffd0
-void MxDSSource::FUN_100bffd0(void* p_unk)
+void MxDSSource::ReadToBuffer(MxDSBuffer* p_buffer)
 {
-  // TODO: Calls read, reading into a buffer somewhere in p_unk.
-  Read(NULL, 0);
+  Read((unsigned char*)p_buffer->GetBuffer(), p_buffer->GetWriteOffset());
 }
 
 // OFFSET: LEGO1 0x100bfff0
@@ -17,4 +17,4 @@ MxLong MxDSSource::GetLengthInDWords()
 MxU32 *MxDSSource::GetBuffer()
 {
   return m_pBuffer;
-}
\ No newline at end of file
+}
diff --git a/LEGO1/mxdssource.h b/LEGO1/mxdssource.h
index 2891f426..9c404ad0 100644
--- a/LEGO1/mxdssource.h
+++ b/LEGO1/mxdssource.h
@@ -3,13 +3,15 @@
 
 #include "mxcore.h"
 
+class MxDSBuffer;
+
 // VTABLE 0x100dc8c8
 class MxDSSource : public MxCore
 {
 public:
   MxDSSource()
     : m_lengthInDWords(0)
-    , m_pBuffer(0)
+    , m_pBuffer(NULL)
     , m_position(-1)
   {}
 
@@ -28,7 +30,7 @@ class MxDSSource : public MxCore
 
   virtual MxLong Open(MxULong) = 0;
   virtual MxLong Close() = 0;
-  virtual void FUN_100bffd0(void* p_unk);
+  virtual void ReadToBuffer(MxDSBuffer* p_buffer);
   virtual MxResult Read(unsigned char *, MxULong) = 0;
   virtual MxLong Seek(MxLong, int) = 0;
   virtual MxULong GetBufferSize() = 0;
diff --git a/LEGO1/mxeventpresenter.cpp b/LEGO1/mxeventpresenter.cpp
index 88c20ce3..3a4ff7f4 100644
--- a/LEGO1/mxeventpresenter.cpp
+++ b/LEGO1/mxeventpresenter.cpp
@@ -1,4 +1,6 @@
 #include "mxeventpresenter.h"
+#include "mxeventmanager.h"
+#include "mxomni.h"
 
 #include "decomp.h"
 
@@ -10,14 +12,31 @@ MxEventPresenter::MxEventPresenter()
   Init();
 }
 
-// OFFSET: LEGO1 0x100c2d40 STUB
+// OFFSET: LEGO1 0x100c2d40
 MxEventPresenter::~MxEventPresenter()
 {
-  // TODO
+  Destroy();
 }
 
 // OFFSET: LEGO1 0x100c2da0
 void MxEventPresenter::Init()
 {
-  m_unk50 = 0;
+  m_unk50 = NULL;
+}
+
+// OFFSET: LEGO1 0x100c2de0
+void MxEventPresenter::Destroy()
+{
+  MxEventManager *eventManager = EventManager();
+  if (eventManager) 
+    EventManager()->RemovePresenter(*this);
+
+  m_criticalSection.Enter();
+
+  if (m_unk50)
+    delete m_unk50;
+
+  Init();
+
+  m_criticalSection.Leave();
 }
diff --git a/LEGO1/mxeventpresenter.h b/LEGO1/mxeventpresenter.h
index 256d0c7f..358a54af 100644
--- a/LEGO1/mxeventpresenter.h
+++ b/LEGO1/mxeventpresenter.h
@@ -26,10 +26,12 @@ class MxEventPresenter : public MxMediaPresenter
     return !strcmp(name, MxEventPresenter::ClassName()) || MxMediaPresenter::IsA(name);
   }
 
+  virtual void Destroy() override; // vtable+0x38
+
 private:
   void Init();
-  undefined4 m_unk50;
 
+  undefined4 *m_unk50;
 };
 
 #endif // MXEVENTPRESENTER_H
diff --git a/LEGO1/mxmediapresenter.cpp b/LEGO1/mxmediapresenter.cpp
index 2fb6b57c..3f31bf96 100644
--- a/LEGO1/mxmediapresenter.cpp
+++ b/LEGO1/mxmediapresenter.cpp
@@ -12,7 +12,7 @@ MxMediaPresenter::~MxMediaPresenter()
 MxResult MxMediaPresenter::Tickle()
 {
   // TODO
-  return 0;
+  return SUCCESS;
 }
 
 // OFFSET: LEGO1 0x100b54e0
diff --git a/LEGO1/mxmediapresenter.h b/LEGO1/mxmediapresenter.h
index d0a5efe4..7ef31a98 100644
--- a/LEGO1/mxmediapresenter.h
+++ b/LEGO1/mxmediapresenter.h
@@ -43,9 +43,8 @@ class MxMediaPresenter : public MxPresenter
   undefined4 m_unk44;
   undefined4 m_unk48;
   undefined4 m_unk4c;
-private:
-  void Init();
 protected:
+  void Init();
   void Destroy(MxBool p_fromDestructor);
 
 };
diff --git a/LEGO1/mxnotificationmanager.h b/LEGO1/mxnotificationmanager.h
index adcd6876..5bc7b3a4 100644
--- a/LEGO1/mxnotificationmanager.h
+++ b/LEGO1/mxnotificationmanager.h
@@ -50,6 +50,8 @@ class MxNotificationManager : public MxCore
   void Unregister(MxCore *p_listener);
   MxResult Send(MxCore *p_listener, MxNotificationParam *p_param);
 
+  inline MxNotificationPtrList *GetQueue() { return m_queue; }
+
 private:
   void FlushPending(MxCore *p_listener);
 };
diff --git a/LEGO1/mxomni.cpp b/LEGO1/mxomni.cpp
index 88e4bf02..0265cc74 100644
--- a/LEGO1/mxomni.cpp
+++ b/LEGO1/mxomni.cpp
@@ -61,22 +61,28 @@ MxResult MxOmni::Start(MxDSAction* p_dsAction)
   MxResult result = FAILURE;
   if(p_dsAction->GetAtomId().GetInternal() != NULL && p_dsAction->GetObjectId() != -1 && m_streamer != NULL)
   {
-    result = m_streamer->Unknown100b99b0(p_dsAction);
+    result = m_streamer->FUN_100b99b0(p_dsAction);
   }
 
   return result;
 }
 
 // OFFSET: LEGO1 0x100b00c0 STUB
-void MxOmni::DeleteObject(MxDSAction &ds)
+MxResult MxOmni::DeleteObject(MxDSAction &p_dsAction)
 {
   // TODO
+  return FAILURE;
 }
 
-// OFFSET: LEGO1 0x100b09a0 STUB
-MxBool MxOmni::DoesEntityExist(MxDSAction &ds)
+// OFFSET: LEGO1 0x100b09a0
+MxBool MxOmni::DoesEntityExist(MxDSAction &p_dsAction)
 {
-  // TODO
+  if (m_streamer->FUN_100b9b30(p_dsAction)) {
+    MxNotificationPtrList *queue = m_notificationManager->GetQueue();
+
+    if (!queue || queue->size() == 0)
+      return TRUE;
+  }
   return FALSE;
 }
 
@@ -94,7 +100,7 @@ int MxOmni::vtable0x30(char*, int, MxCore*)
 }
 
 // OFFSET: LEGO1 0x100aefc0
-void MxOmni::NotifyCurrentEntity(MxParam *p_param)
+void MxOmni::NotifyCurrentEntity(MxNotificationParam *p_param)
 {
 }
 
@@ -226,7 +232,7 @@ MxResult MxOmni::Create(MxOmniCreateParam &p)
   }
 
   if (p.CreateFlags().CreateStreamer()) {
-    if (!(m_streamer = new MxStreamer()) || m_streamer->Create() != SUCCESS) 
+    if (!(m_streamer = new MxStreamer()) || m_streamer->Create() != SUCCESS)
       goto done;
   }
 
@@ -397,3 +403,9 @@ MxEventManager* EventManager()
 {
   return MxOmni::GetInstance()->GetEventManager();
 }
+
+// OFFSET: LEGO1 0x100acf70
+MxResult DeleteObject(MxDSAction &p_dsAction)
+{
+  return MxOmni::GetInstance()->DeleteObject(p_dsAction);
+}
\ No newline at end of file
diff --git a/LEGO1/mxomni.h b/LEGO1/mxomni.h
index ab07d2bd..430c0fe6 100644
--- a/LEGO1/mxomni.h
+++ b/LEGO1/mxomni.h
@@ -10,6 +10,7 @@ class MxDSAction;
 class MxEventManager;
 class MxMusicManager;
 class MxNotificationManager;
+class MxNotificationParam;
 class MxObjectFactory;
 class MxOmniCreateParam;
 class MxSoundManager;
@@ -41,11 +42,11 @@ class MxOmni : public MxCore
   virtual MxResult Create(COMPAT_CONST MxOmniCreateParam &p); // vtable+18
   virtual void Destroy(); // vtable+1c
   virtual MxResult Start(MxDSAction* p_dsAction); // vtable+20
-  virtual void DeleteObject(MxDSAction &ds); // vtable+24
-  virtual MxBool DoesEntityExist(MxDSAction &ds); // vtable+28
+  virtual MxResult DeleteObject(MxDSAction &p_dsAction); // vtable+24
+  virtual MxBool DoesEntityExist(MxDSAction &p_dsAction); // vtable+28
   virtual void vtable0x2c(); // vtable+2c
   virtual int vtable0x30(char*, int, MxCore*); // vtable+30
-  virtual void NotifyCurrentEntity(MxParam *p_param); // vtable+34
+  virtual void NotifyCurrentEntity(MxNotificationParam *p_param); // vtable+34
   virtual void StartTimer(); // vtable+38
   virtual void StopTimer(); // vtable+3c
   virtual MxBool IsTimerRunning(); //vtable+40
@@ -94,6 +95,7 @@ __declspec(dllexport) MxMusicManager * MusicManager();
 __declspec(dllexport) MxEventManager * EventManager();
 __declspec(dllexport) MxNotificationManager * NotificationManager();
 
+MxResult DeleteObject(MxDSAction &p_dsAction);
 MxVideoManager *MVideoManager();
 MxAtomIdCounterSet *AtomIdCounterSet();
 MxObjectFactory *ObjectFactory();
diff --git a/LEGO1/mxpalette.cpp b/LEGO1/mxpalette.cpp
index cdd1597f..b11a1209 100644
--- a/LEGO1/mxpalette.cpp
+++ b/LEGO1/mxpalette.cpp
@@ -379,7 +379,7 @@ void MxPalette::Detach()
 MxResult MxPalette::SetEntries(LPPALETTEENTRY p_entries)
 {
   MxS32 i;
-  MxResult status = 0;
+  MxResult status = SUCCESS;
 
   if ( this->m_palette )
   {
@@ -423,7 +423,7 @@ MxResult MxPalette::SetEntries(LPPALETTEENTRY p_entries)
       this->m_entries[i].peFlags = 0x80;
     
     if ( this->m_palette->SetEntries(0, 0, 256, this->m_entries) )
-      status = -1;
+      status = FAILURE;
   }
 
   return status;
diff --git a/LEGO1/mxsoundmanager.cpp b/LEGO1/mxsoundmanager.cpp
index 51336843..ca04580f 100644
--- a/LEGO1/mxsoundmanager.cpp
+++ b/LEGO1/mxsoundmanager.cpp
@@ -58,11 +58,23 @@ MxResult MxSoundManager::Create(MxU32 p_frequencyMS, MxBool p_createThread)
 // OFFSET: LEGO1 0x100aed10 STUB
 void MxSoundManager::vtable0x34()
 {
-  // TODO STUB
+  // TODO
 }
 
 // OFFSET: LEGO1 0x100aee10 STUB
 void MxSoundManager::vtable0x38()
 {
-  // TODO STUB
+  // TODO
+}
+
+// OFFSET: LEGO1 0x100aeab0
+void MxSoundManager::Destroy()
+{
+  Destroy(FALSE);
+}
+
+// OFFSET: LEGO1 0x100aeac0 STUB
+void MxSoundManager::SetVolume(MxS32 p_volume)
+{
+  // TODO
 }
diff --git a/LEGO1/mxsoundmanager.h b/LEGO1/mxsoundmanager.h
index 3bd41085..9e0656f8 100644
--- a/LEGO1/mxsoundmanager.h
+++ b/LEGO1/mxsoundmanager.h
@@ -14,6 +14,8 @@ class MxSoundManager : public MxAudioManager
   MxSoundManager();
   virtual ~MxSoundManager() override; // vtable+0x0
 
+  virtual void Destroy() override; // vtable+18
+  virtual void SetVolume(MxS32 p_volume) override; // vtable+2c
   virtual MxResult Create(MxU32 p_frequencyMS, MxBool p_createThread); //vtable+0x30
   virtual void vtable0x34(); // vtable+0x34
   virtual void vtable0x38(); // vtable+0x38
diff --git a/LEGO1/mxsoundpresenter.cpp b/LEGO1/mxsoundpresenter.cpp
index 50e04ce4..8204c01c 100644
--- a/LEGO1/mxsoundpresenter.cpp
+++ b/LEGO1/mxsoundpresenter.cpp
@@ -1 +1,45 @@
 #include "mxsoundpresenter.h"
+
+#include "decomp.h"
+#include "mxsoundmanager.h"
+
+DECOMP_SIZE_ASSERT(MxSoundPresenter, 0x54)
+
+// OFFSET: LEGO1 0x1000d430
+MxSoundPresenter::~MxSoundPresenter()
+{
+  Destroy(TRUE);
+}
+
+// OFFSET: LEGO1 0x100b1a50
+void MxSoundPresenter::Destroy(MxBool p_fromDestructor)
+{
+  if (MSoundManager())
+    MSoundManager()->RemovePresenter(*this);
+
+  this->m_criticalSection.Enter();
+  MxMediaPresenter::Init();
+  this->m_criticalSection.Leave();
+
+  if (!p_fromDestructor)
+    MxMediaPresenter::Destroy(FALSE);
+}
+
+// OFFSET: LEGO1 0x100b1aa0
+MxResult MxSoundPresenter::AddToManager()
+{
+  MxResult ret = FAILURE;
+
+  if (MSoundManager()) {
+    ret = SUCCESS;
+    MSoundManager()->AddPresenter(*this);
+  }
+
+  return ret;
+}
+
+// OFFSET: LEGO1 0x1000d490
+void MxSoundPresenter::Destroy()
+{
+  Destroy(FALSE);
+}
diff --git a/LEGO1/mxsoundpresenter.h b/LEGO1/mxsoundpresenter.h
index 53d7000d..a63083af 100644
--- a/LEGO1/mxsoundpresenter.h
+++ b/LEGO1/mxsoundpresenter.h
@@ -2,11 +2,14 @@
 #define MXSOUNDPRESENTER_H
 
 #include "mxaudiopresenter.h"
+#include "mxomni.h"
 
 // VTABLE 0x100d4b08
 class MxSoundPresenter : public MxAudioPresenter
 {
 public:
+  virtual ~MxSoundPresenter() override;
+
   // OFFSET: LEGO1 0x1000d4a0
   inline virtual const char *ClassName() const // vtable+0x0c
   { 
@@ -20,6 +23,11 @@ class MxSoundPresenter : public MxAudioPresenter
     return !strcmp(name, MxSoundPresenter::ClassName()) || MxAudioPresenter::IsA(name);
   };
 
+  virtual MxResult AddToManager() override; // vtable+0x34
+  virtual void Destroy() override; // vtable+0x38
+
+private:
+  void Destroy(MxBool);
 };
 
 #endif // MXSOUNDPRESENTER_H
diff --git a/LEGO1/mxstreamer.cpp b/LEGO1/mxstreamer.cpp
index 84d1b7b9..3bb13b73 100644
--- a/LEGO1/mxstreamer.cpp
+++ b/LEGO1/mxstreamer.cpp
@@ -132,7 +132,7 @@ MxResult MxStreamer::AddStreamControllerToOpenList(MxStreamController *stream)
 }
 
 // OFFSET: LEGO1 0x100b99b0
-MxResult MxStreamer::Unknown100b99b0(MxDSAction* p_action)
+MxResult MxStreamer::FUN_100b99b0(MxDSAction* p_action)
 {
   MxStreamController* controller;
   if (p_action != NULL && p_action->GetAtomId().GetInternal() != NULL && p_action->GetObjectId() != -1)
@@ -147,6 +147,15 @@ MxResult MxStreamer::Unknown100b99b0(MxDSAction* p_action)
   return FAILURE;
 }
 
+// OFFSET: LEGO1 0x100b9b30
+MxBool MxStreamer::FUN_100b9b30(MxDSObject &p_dsObject)
+{
+  MxStreamController *controller = GetOpenStream(p_dsObject.GetAtomId().GetInternal());
+  if (controller)
+    return controller->FUN_100c20d0(p_dsObject);
+  return TRUE;
+}
+
 // OFFSET: LEGO1 0x100b9b60
 MxLong MxStreamer::Notify(MxParam &p)
 {
diff --git a/LEGO1/mxstreamer.h b/LEGO1/mxstreamer.h
index b5d86e4d..3931b1fb 100644
--- a/LEGO1/mxstreamer.h
+++ b/LEGO1/mxstreamer.h
@@ -7,6 +7,7 @@
 #include "mxcore.h"
 #include "mxnotificationparam.h"
 #include "mxstreamcontroller.h"
+#include "mxdsobject.h"
 #include "mxtypes.h"
 
 // NOTE: This feels like some kind of templated class, maybe something from the
@@ -92,11 +93,10 @@ class MxStreamer : public MxCore
 
   virtual MxResult Create(); // vtable+0x14
 
+  MxBool FUN_100b9b30(MxDSObject &p_dsObject);
   MxStreamController *GetOpenStream(const char *p_name);
-
   MxResult AddStreamControllerToOpenList(MxStreamController *p_stream);
-
-  MxResult MxStreamer::Unknown100b99b0(MxDSAction* p_action);
+  MxResult FUN_100b99b0(MxDSAction* p_action);
 
 private:
   list<MxStreamController *> m_openStreams; // 0x8
diff --git a/LEGO1/mxvideopresenter.cpp b/LEGO1/mxvideopresenter.cpp
index a22adcd4..f48a0f8b 100644
--- a/LEGO1/mxvideopresenter.cpp
+++ b/LEGO1/mxvideopresenter.cpp
@@ -2,7 +2,7 @@
 #include "MxVideoManager.h"
 
 DECOMP_SIZE_ASSERT(MxVideoPresenter, 0x64);
-DECOMP_SIZE_ASSERT(MxVideoPresenter::UnkStruct, 0xc);
+DECOMP_SIZE_ASSERT(MxVideoPresenter::AlphaMask, 0xc);
 
 // OFFSET: LEGO1 0x1000c700
 void MxVideoPresenter::VTable0x5c(undefined4 p_unknown1)
@@ -49,28 +49,128 @@ LPDIRECTDRAWSURFACE MxVideoPresenter::VTable0x78()
 // OFFSET: LEGO1 0x1000c7c0
 MxBool MxVideoPresenter::VTable0x7c()
 {
-  return (m_bitmap != NULL) || (m_unk54 != NULL);
+  return (m_bitmap != NULL) || (m_alpha != NULL);
 }
 
 // OFFSET: LEGO1 0x1000c7e0
 MxS32 MxVideoPresenter::GetWidth()
 {
-  return m_unk54 ? m_unk54->width
+  return m_alpha ? m_alpha->m_width
                  : m_bitmap->GetBmiHeader()->biWidth;
 }
 
 // OFFSET: LEGO1 0x1000c800
 MxS32 MxVideoPresenter::GetHeight()
 {
-  return m_unk54 ? m_unk54->height
+  return m_alpha ? m_alpha->m_height
                  : m_bitmap->GetBmiHeader()->biHeight;
 }
 
+// OFFSET: LEGO1 0x100b24f0
+MxVideoPresenter::AlphaMask::AlphaMask(const MxBitmap &p_bitmap)
+{
+  m_width  = p_bitmap.GetBmiWidth();
+  // DECOMP: ECX becomes word-sized if these are not two separate actions.
+  MxLong _height = p_bitmap.GetBmiHeightAbs();
+  m_height = _height;
+
+  MxS32 size = ((m_width * m_height) / 8) + 1;
+  m_bitmask = new MxU8[size];
+  memset(m_bitmask, 0, size);
+
+  MxU32 biCompression = p_bitmap.GetBmiHeader()->biCompression;
+  MxU32 rows_before_top;
+  MxU8 *bitmap_src_ptr;
+
+  // The goal here is to enable us to walk through the bitmap's rows
+  // in order, regardless of the orientation. We want to end up at the
+  // start of the first row, which is either at position 0, or at
+  // (image_stride * biHeight) - 1.
+
+  // Reminder: Negative biHeight means this is a top-down DIB.
+  // Otherwise it is bottom-up.
+
+  if (biCompression == BI_RGB) {
+    // DECOMP: I think this must be an OR. If not, the check for
+    // biCompression == 16 gets optimized away.
+    if (biCompression == BI_RGB_TOPDOWN || p_bitmap.GetBmiHeight() < 0) {
+      rows_before_top = 0;
+    } else {
+      rows_before_top = p_bitmap.GetBmiHeightAbs();
+      rows_before_top--;
+    }
+
+    goto seek_to_last_row;
+  } else if (biCompression == BI_RGB_TOPDOWN) {
+    // DECOMP: This is the only condition where we skip the
+    // calculation below.
+    bitmap_src_ptr = p_bitmap.GetBitmapData();
+  } else {
+    if (p_bitmap.GetBmiHeight() < 0) {
+      rows_before_top = 0;
+    } else {
+      rows_before_top = p_bitmap.GetBmiHeightAbs();
+      rows_before_top--;
+    }
+
+// TODO: would prefer not to use goto if we can figure this structure out
+seek_to_last_row:
+    bitmap_src_ptr = ((p_bitmap.GetBmiWidth()+3)&-4) * rows_before_top + p_bitmap.GetBitmapData();
+  }
+
+  // How many bytes are there for each row of the bitmap?
+  // (i.e. the image stride)
+  // If this is a bottom-up DIB, we will walk it in reverse.
+  // TODO: Same rounding trick as in MxBitmap
+  MxS32 row_seek = ((m_height+3)&-4);
+  if (p_bitmap.GetBmiHeight() < 0)
+    row_seek = -row_seek;
+
+  // The actual offset into the m_bitmask array. The two for-loops
+  // are just for counting the pixels.
+  MxS32 offset = 0;
+
+  MxU8 *t_ptr = bitmap_src_ptr;
+  for (MxS32 j = 0; j < m_height; j++) {
+    for (MxS32 i = 0; i < m_width; i++) {
+      if (*t_ptr) {
+        // TODO: Second CDQ instruction for abs() should not be there.
+        MxU32 shift = abs(offset) & 7;
+        m_bitmask[offset / 8] |= (1 << abs(shift));
+      }
+      t_ptr++;
+      offset++;
+    }
+    // Seek to the start of the next row
+    bitmap_src_ptr += row_seek;
+    t_ptr = bitmap_src_ptr;
+  }
+}
+
+// OFFSET: LEGO1 0x100b2670
+MxVideoPresenter::AlphaMask::AlphaMask(const MxVideoPresenter::AlphaMask &p_alpha)
+{
+  m_width  = p_alpha.m_width;
+  m_height = p_alpha.m_height;
+
+  MxS32 size = ((m_width * m_height) / 8) + 1;
+  m_bitmask = new MxU8[size];
+  memcpy(m_bitmask, p_alpha.m_bitmask, size);
+}
+
+
+// OFFSET: LEGO1 0x100b26d0
+MxVideoPresenter::AlphaMask::~AlphaMask()
+{
+  if (m_bitmask)
+    delete[] m_bitmask;
+}
+
 // OFFSET: LEGO1 0x100b2760
 void MxVideoPresenter::Init()
 {
   m_bitmap = NULL;
-  m_unk54 = NULL;
+  m_alpha = NULL;
   m_unk5c = 1;
   m_unk58 = NULL;
   m_unk60 = -1;
@@ -99,7 +199,7 @@ void MxVideoPresenter::Destroy(MxBool p_fromDestructor)
     m_flags = m_flags & 0xfb;
   }
 
-  if (MVideoManager() && (m_unk54 || m_bitmap)) {
+  if (MVideoManager() && (m_alpha || m_bitmap)) {
     MxS32 height = GetHeight();
     MxS32 width = GetWidth();
 
@@ -112,7 +212,7 @@ void MxVideoPresenter::Destroy(MxBool p_fromDestructor)
   }
 
   delete m_bitmap;
-  delete m_unk54;
+  delete m_alpha;
 
   Init();
 
diff --git a/LEGO1/mxvideopresenter.h b/LEGO1/mxvideopresenter.h
index 30a6ada7..61a1027c 100644
--- a/LEGO1/mxvideopresenter.h
+++ b/LEGO1/mxvideopresenter.h
@@ -49,16 +49,19 @@ class MxVideoPresenter : public MxMediaPresenter
 
   // TODO: Not sure what this is. Seems to have size of 12 bytes
   // based on 0x100b9e9a. Values are copied from the bitmap header.
-  struct UnkStruct {
-    undefined unk0[4];
-    MxU16 width;
-    MxU16 height;
+  // SIZE 0xc
+  struct AlphaMask {
+    MxU8 *m_bitmask;
+    MxU16 m_width;
+    MxU16 m_height;
 
-    virtual ~UnkStruct() {}
+    AlphaMask(const MxBitmap &);
+    AlphaMask(const AlphaMask &);
+    virtual ~AlphaMask();
   };
 
   MxBitmap *m_bitmap;
-  UnkStruct *m_unk54;
+  AlphaMask *m_alpha;
   LPDIRECTDRAWSURFACE m_unk58;
   undefined2 m_unk5c;
   unsigned char m_flags; // 0x5e