diff --git a/Source/Core/Core/System.cpp b/Source/Core/Core/System.cpp
@@ -3,12 +3,18 @@
 
 #include "Core/System.h"
 
+#include <memory>
+
+#include "AudioCommon/SoundStream.h"
 #include "Core/Config/MainSettings.h"
 
 namespace Core
 {
 struct System::Impl
 {
+  std::unique_ptr<SoundStream> m_sound_stream;
+  bool m_sound_stream_running = false;
+  bool m_audio_dump_started = false;
 };
 
 System::System() : m_impl{std::make_unique<Impl>()}
@@ -22,4 +28,34 @@ void System::Initialize()
   m_separate_cpu_and_gpu_threads = Config::Get(Config::MAIN_CPU_THREAD);
   m_mmu_enabled = Config::Get(Config::MAIN_MMU);
 }
+
+SoundStream* System::GetSoundStream() const
+{
+  return m_impl->m_sound_stream.get();
+}
+
+void System::SetSoundStream(std::unique_ptr<SoundStream> sound_stream)
+{
+  m_impl->m_sound_stream = std::move(sound_stream);
+}
+
+bool System::IsSoundStreamRunning() const
+{
+  return m_impl->m_sound_stream_running;
+}
+
+void System::SetSoundStreamRunning(bool running)
+{
+  m_impl->m_sound_stream_running = running;
+}
+
+bool System::IsAudioDumpStarted() const
+{
+  return m_impl->m_audio_dump_started;
+}
+
+void System::SetAudioDumpStarted(bool started)
+{
+  m_impl->m_audio_dump_started = started;
+}
 }  // namespace Core
diff --git a/Source/Core/Core/System.h b/Source/Core/Core/System.h
@@ -5,6 +5,8 @@
 
 #include <memory>
 
+class SoundStream;
+
 namespace Core
 {
 // Central class that encapsulates the running system.
@@ -31,6 +33,13 @@ class System
   bool IsDualCoreMode() const { return m_separate_cpu_and_gpu_threads; }
   bool IsMMUMode() const { return m_mmu_enabled; }
 
+  SoundStream* GetSoundStream() const;
+  void SetSoundStream(std::unique_ptr<SoundStream> sound_stream);
+  bool IsSoundStreamRunning() const;
+  void SetSoundStreamRunning(bool running);
+  bool IsAudioDumpStarted() const;
+  void SetAudioDumpStarted(bool started);
+
 private:
   System();
 

diff --git a/Source/Core/DolphinQt/GBAWidget.cpp b/Source/Core/DolphinQt/GBAWidget.cpp
@@ -26,6 +26,7 @@
 #include "Core/HW/SI/SI_Device.h"
 #include "Core/Movie.h"
 #include "Core/NetPlayProto.h"
+#include "Core/System.h"
 #include "DolphinQt/QtUtils/DolphinFileDialog.h"
 #include "DolphinQt/QtUtils/ModalMessageBox.h"
 #include "DolphinQt/Resources.h"
@@ -325,7 +326,8 @@ void GBAWidget::UpdateTitle()
 void GBAWidget::UpdateVolume()
 {
   int volume = m_muted ? 0 : m_volume * 256 / 100;
-  g_sound_stream->GetMixer()->SetGBAVolume(m_core_info.device_number, volume, volume);
+  auto& system = Core::System::GetInstance();
+  system.GetSoundStream()->GetMixer()->SetGBAVolume(m_core_info.device_number, volume, volume);
   UpdateTitle();
 }