diff --git a/LEGO1/mxaudiopresenter.cpp b/LEGO1/mxaudiopresenter.cpp
index ac634362..48a02377 100644
--- a/LEGO1/mxaudiopresenter.cpp
+++ b/LEGO1/mxaudiopresenter.cpp
@@ -3,3 +3,15 @@
 #include "decomp.h"
 
 DECOMP_SIZE_ASSERT(MxAudioPresenter, 0x54);
+
+// OFFSET: LEGO1 0x1000d260
+undefined4 MxAudioPresenter::vtable5c()
+{
+  return this->m_unk50;
+}
+
+// OFFSET: LEGO1 0x1000d270
+void MxAudioPresenter::vtable60(undefined4 p_unk50)
+{
+  this->m_unk50 = p_unk50;
+}
diff --git a/LEGO1/mxaudiopresenter.h b/LEGO1/mxaudiopresenter.h
index c1001a13..fb2e75a8 100644
--- a/LEGO1/mxaudiopresenter.h
+++ b/LEGO1/mxaudiopresenter.h
@@ -1,6 +1,7 @@
 #ifndef MXAUDIOPRESENTER_H
 #define MXAUDIOPRESENTER_H
 
+#include "decomp.h"
 #include "mxmediapresenter.h"
 
 // VTABLE 0x100d4c70
@@ -24,7 +25,10 @@ public:
     return !strcmp(name, MxAudioPresenter::ClassName()) || MxMediaPresenter::IsA(name);
   }
 
-  int m_unk50;
+  virtual undefined4 vtable5c();
+  virtual void vtable60(undefined4);
+
+  undefined4 m_unk50;
 };
 
 #endif // MXAUDIOPRESENTER_H