diff --git a/src/xenia/apu/audio_system.cc b/src/xenia/apu/audio_system.cc
index b01b54a5c..1273c4b2a 100644
--- a/src/xenia/apu/audio_system.cc
+++ b/src/xenia/apu/audio_system.cc
@@ -25,9 +25,12 @@ AudioSystem::AudioSystem(Emulator* emulator) :
   // Create the run loop used for any windows/etc.
   // This must be done on the thread we create the driver.
   run_loop_ = xe_run_loop_create();
+
+  lock_ = xe_mutex_alloc();
 }
 
 AudioSystem::~AudioSystem() {
+  xe_mutex_free(lock_);
 }
 
 X_STATUS AudioSystem::Setup() {
@@ -61,6 +64,8 @@ void AudioSystem::ThreadStart() {
   Initialize();
   XEASSERTNOTNULL(driver_);
 
+  auto processor = emulator_->processor();
+
   // Main run loop.
   while (running_) {
     // Peek main run loop.
@@ -72,6 +77,14 @@ void AudioSystem::ThreadStart() {
     }
 
     // Pump worker.
+    // mehhh
+    xe_mutex_lock(lock_);
+    auto clients = clients_;
+    xe_mutex_unlock(lock_);
+    for (auto it = clients.begin(); it != clients.end(); ++it) {
+      processor->ExecuteInterrupt(
+          0, it->callback, it->wrapped_callback_arg, 0);
+    }
     //worker_->Pump();
     Sleep(1000);
 
@@ -100,6 +113,16 @@ void AudioSystem::Shutdown() {
   xe_run_loop_release(run_loop_);
 }
 
+void AudioSystem::RegisterClient(
+    uint32_t callback, uint32_t callback_arg) {
+  uint32_t ptr = (uint32_t)memory()->HeapAlloc(0, 0x4, 0);
+  auto mem = memory()->membase();
+  XESETUINT32BE(mem + ptr, callback_arg);
+  xe_mutex_lock(lock_);
+  clients_.push_back({ callback, callback_arg, ptr });
+  xe_mutex_unlock(lock_);
+}
+
 bool AudioSystem::HandlesRegister(uint64_t addr) {
   return (addr & 0xFFFF0000) == 0x7FEA0000;
 }
diff --git a/src/xenia/apu/audio_system.h b/src/xenia/apu/audio_system.h
index 9fe552e04..e3f756691 100644
--- a/src/xenia/apu/audio_system.h
+++ b/src/xenia/apu/audio_system.h
@@ -35,6 +35,9 @@ public:
   virtual X_STATUS Setup();
   virtual void Shutdown();
 
+  void RegisterClient(uint32_t callback, uint32_t callback_arg);
+  //void UnregisterClient();
+
   bool HandlesRegister(uint64_t addr);
   virtual uint64_t ReadRegister(uint64_t addr);
   virtual void WriteRegister(uint64_t addr, uint64_t value);
@@ -70,6 +73,14 @@ protected:
   xe_run_loop_ref   run_loop_;
   xe_thread_ref     thread_;
   bool              running_;
+  xe_mutex_t*       lock_;
+
+  typedef struct {
+    uint32_t callback;
+    uint32_t callback_arg;
+    uint32_t wrapped_callback_arg;
+  } RenderDriverClient;
+  std::vector<RenderDriverClient> clients_;
 
   AudioDriver*      driver_;
 };
diff --git a/src/xenia/apu/nop/nop_audio_system.cc b/src/xenia/apu/nop/nop_audio_system.cc
index f6fc92edd..3354229af 100644
--- a/src/xenia/apu/nop/nop_audio_system.cc
+++ b/src/xenia/apu/nop/nop_audio_system.cc
@@ -33,6 +33,7 @@ void NopAudioSystem::Initialize() {
 }
 
 void NopAudioSystem::Pump() {
+  //
 }
 
 void NopAudioSystem::Shutdown() {
diff --git a/src/xenia/kernel/xboxkrnl_audio.cc b/src/xenia/kernel/xboxkrnl_audio.cc
index 0406c6e90..68f47a6b2 100644
--- a/src/xenia/kernel/xboxkrnl_audio.cc
+++ b/src/xenia/kernel/xboxkrnl_audio.cc
@@ -9,6 +9,7 @@
 
 #include <xenia/kernel/xboxkrnl_audio.h>
 
+#include <xenia/emulator.h>
 #include <xenia/apu/apu.h>
 #include <xenia/kernel/kernel_state.h>
 #include <xenia/kernel/xboxkrnl_private.h>
@@ -75,7 +76,59 @@ SHIM_CALL XAudioGetSpeakerConfig_shim(
       "XAudioGetSpeakerConfig(%.8X)",
       config_ptr);
 
-  SHIM_SET_MEM_32(config_ptr, 1); // ?
+  SHIM_SET_MEM_32(config_ptr, 1);
+
+  SHIM_SET_RETURN(X_ERROR_SUCCESS);
+}
+
+
+SHIM_CALL XAudioRegisterRenderDriverClient_shim(
+    PPCContext* ppc_state, KernelState* state) {
+  uint32_t callback_ptr = SHIM_GET_ARG_32(0);
+  uint32_t driver_ptr = SHIM_GET_ARG_32(1);
+
+  uint32_t callback = SHIM_MEM_32(callback_ptr + 0);
+  uint32_t callback_arg = SHIM_MEM_32(callback_ptr + 4);
+
+  XELOGD(
+      "XAudioRegisterRenderDriverClient(%.8X(%.8X, %.8X), %.8X)",
+      callback_ptr, callback, callback_arg, driver_ptr);
+
+  auto audio_system = state->emulator()->audio_system();
+  audio_system->RegisterClient(callback, callback_arg);
+
+  SHIM_SET_MEM_32(driver_ptr, 0xAADD1100);
+
+  SHIM_SET_RETURN(X_ERROR_SUCCESS);
+}
+
+
+SHIM_CALL XAudioUnregisterRenderDriverClient_shim(
+    PPCContext* ppc_state, KernelState* state) {
+  uint32_t driver_ptr = SHIM_GET_ARG_32(0);
+
+  XELOGD(
+      "XAudioUnregisterRenderDriverClient(%.8X)",
+      driver_ptr);
+
+  auto audio_system = state->emulator()->audio_system();
+  //audio_system->UnregisterClient(...);
+
+  SHIM_SET_RETURN(X_ERROR_SUCCESS);
+}
+
+
+SHIM_CALL XAudioSubmitRenderDriverFrame_shim(
+    PPCContext* ppc_state, KernelState* state) {
+  uint32_t driver_ptr = SHIM_GET_ARG_32(0);
+  uint32_t samples_ptr = SHIM_GET_ARG_32(1);
+
+  XELOGD(
+      "XAudioSubmitRenderDriverFrame(%.8X, %.8X)",
+      driver_ptr, samples_ptr);
+
+  auto audio_system = state->emulator()->audio_system();
+  //audio_system->SubmitFrame();
 
   SHIM_SET_RETURN(X_ERROR_SUCCESS);
 }
@@ -111,4 +164,8 @@ void xe::kernel::xboxkrnl::RegisterAudioExports(
 
   SHIM_SET_MAPPING("xboxkrnl.exe", XAudioGetVoiceCategoryVolume, state);
   SHIM_SET_MAPPING("xboxkrnl.exe", XAudioGetSpeakerConfig, state);
+
+  SHIM_SET_MAPPING("xboxkrnl.exe", XAudioRegisterRenderDriverClient, state);
+  SHIM_SET_MAPPING("xboxkrnl.exe", XAudioUnregisterRenderDriverClient, state);
+  SHIM_SET_MAPPING("xboxkrnl.exe", XAudioSubmitRenderDriverFrame, state);
 }