diff --git a/cdcSound/CMakeLists.txt b/cdcSound/CMakeLists.txt
index d799f56..c271ff1 100644
--- a/cdcSound/CMakeLists.txt
+++ b/cdcSound/CMakeLists.txt
@@ -8,6 +8,7 @@ target_sources(dxhr PRIVATE
 	SoundPlex.cpp
 	SoundPlexAssignment.cpp
 	SoundPlexChoiceList.cpp
+	SoundPlexStream.cpp
 	SoundPlexWave.cpp
 	Voice.cpp
 	snd.cpp)
diff --git a/cdcSound/SoundPlex.cpp b/cdcSound/SoundPlex.cpp
index 1d0e084..938382f 100644
--- a/cdcSound/SoundPlex.cpp
+++ b/cdcSound/SoundPlex.cpp
@@ -257,8 +257,12 @@ void buildUI(dtp::SoundPlex *snd, std::string indent) {
 		break;
 	}
 
-	case dtp::SoundPlex::SoundPlexSelector_Stream: // 4
+	case dtp::SoundPlex::SoundPlexSelector_Stream: { // 4
+		auto *data = (dtp::SoundPlex::Stream *)snd->m_data;
+		ImGui::SameLine();
+		ImGui::Text("%s", data->m_streamName);
 		break;
+	}
 
 	case dtp::SoundPlex::SoundPlexSelector_Assignment: { // 5
 		auto *data = (dtp::SoundPlex::Assignment*)snd->m_data;
diff --git a/cdcSound/SoundPlexStream.cpp b/cdcSound/SoundPlexStream.cpp
new file mode 100644
index 0000000..b45e929
--- /dev/null
+++ b/cdcSound/SoundPlexStream.cpp
@@ -0,0 +1,54 @@
+#include <cstdio>
+#include "Sample.h"
+#include "SoundPlexStream.h"
+
+namespace cdc {
+
+SoundPlexStream::SoundPlexStream(
+	void *data,
+	Controls *controls,
+	Controls3d *controls3d,
+	SoundOwner *owner)
+:
+	SoundPlexSingleChild(controls, controls3d, owner)
+{
+	dtpStream = (dtp::SoundPlex::Stream *)data;
+	m_state &= ~15;
+	m_state |=   1;
+	// TODO
+}
+
+uint32_t SoundPlexStream::Init() {
+	printf("SoundPlexStream::Init this=%p, dtpStream=%p, name=%s\n", this, dtpStream, dtpStream ? dtpStream->m_streamName : nullptr);
+	// TODO
+	multiplexStream = MultiplexStreamImpl::CreateSoundStream(
+		dtpStream->m_streamName,
+		dtpStream->m_priorityStream
+		// TODO
+	);
+
+	// HACK
+	((MultiplexStreamImpl*)multiplexStream)->hackSample->Play();
+
+	m_state &= ~0xD;
+	m_state |= 0x12;
+
+	return true;
+}
+
+SoundPlex *SoundPlexStream::Update(float) {
+	// TODO
+
+	if ((m_state & 0xF) == 1) {
+		// TODO
+		Init();
+	}
+
+	return nullptr;
+}
+
+void SoundPlexStream::End(EndType) {
+	// TODO
+}
+
+}
diff --git a/cdcSound/SoundPlexStream.h b/cdcSound/SoundPlexStream.h
index 304d5b8..60b92cb 100644
--- a/cdcSound/SoundPlexStream.h
+++ b/cdcSound/SoundPlexStream.h
@@ -1,23 +1,24 @@
 #pragma once
+#include "cdc/dtp/soundplex.h"
 #include "SoundPlex.h"
+#include "MultiplexStream.h"
 
 namespace cdc {
 
 class SoundPlexStream : public SoundPlexSingleChild {
+	MultiplexStream *multiplexStream = nullptr; // 18
+	dtp::SoundPlex::Stream *dtpStream = nullptr; // 24
+
 public:
 	SoundPlexStream(
 		void *data,
 		Controls *controls,
 		Controls3d *controls3d,
-		SoundOwner *owner)
-	:
-		SoundPlexSingleChild(controls, controls3d, owner)
-	{
-		// TODO
-	}
+		SoundOwner *owner);
 
-	SoundPlex *Update(float) override { /*TODO*/ return nullptr; }
-	void End(EndType) override { /*TODO*/ }
+	uint32_t Init();
+	SoundPlex *Update(float) override;
+	void End(EndType) override;
 };
 
 }
diff --git a/eventually_generated/cdc/dtp/soundplex.h b/eventually_generated/cdc/dtp/soundplex.h
index c375908..7533ecb 100644
--- a/eventually_generated/cdc/dtp/soundplex.h
+++ b/eventually_generated/cdc/dtp/soundplex.h
@@ -38,6 +38,13 @@ struct SoundPlex {
 		uint32_t m_counter; // 10
 	};
 
+	struct Stream { // compare with dtp::Multiplex
+		const char *m_streamName;
+		int8_t byte4; // TODO
+		int8_t m_priorityStream;
+		// TODO
+	};
+
 	struct Wave {
 		uint32_t m_id;
 		// TODO