diff --git a/CMakeLists.txt b/CMakeLists.txt
index 08c66f96..59da177e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -309,7 +309,7 @@ target_link_libraries(lovr
 if(LOVR_ENABLE_AUDIO)
   target_sources(lovr PRIVATE
     src/modules/audio/audio.c
-    src/modules/audio/spatializers/dummy_spatializer.c
+    src/modules/audio/spatializers/simple_spatializer.c
     src/api/l_audio.c
     src/api/l_audio_source.c
     src/lib/miniaudio/miniaudio.c
diff --git a/src/api/l_audio.c b/src/api/l_audio.c
index ad3bda75..d975f45e 100644
--- a/src/api/l_audio.c
+++ b/src/api/l_audio.c
@@ -43,8 +43,8 @@ static int l_lovrAudioSetDevice(lua_State *L) {
   AudioType type = luax_checkenum(L, 1, AudioType, "playback");
   void* id = lua_touserdata(L, 2);
   size_t size = luax_len(L, 2);
-  uint32_t sampleRate = lua_tointeger(L, 2);
-  SampleFormat format = luax_checkenum(L, 1, SampleFormat, "f32");
+  uint32_t sampleRate = lua_tointeger(L, 3);
+  SampleFormat format = luax_checkenum(L, 4, SampleFormat, "f32");
   bool success = lovrAudioSetDevice(type, id, size, sampleRate, format);
   lua_pushboolean(L, success);
   return 1;
@@ -174,7 +174,7 @@ int luaopen_lovr_audio(lua_State* L) {
   lua_pop(L, 2);
 
   if (lovrAudioInit(spatializer)) {
-    lovrAudioSetDevice(AUDIO_PLAYBACK, NULL, 0, 44100, SAMPLE_F32);
+    lovrAudioSetDevice(AUDIO_PLAYBACK, NULL, 0, PLAYBACK_SAMPLE_RATE, SAMPLE_F32);
     lovrAudioStart(AUDIO_PLAYBACK);
     luax_atexit(L, lovrAudioDestroy);
   }
diff --git a/src/modules/audio/audio.c b/src/modules/audio/audio.c
index 8f912881..38f8e79e 100644
--- a/src/modules/audio/audio.c
+++ b/src/modules/audio/audio.c
@@ -66,10 +66,9 @@ static void onPlayback(ma_device* device, void* out, const void* in, uint32_t co
     state.leftoverFrames -= leftoverFrames;
     output += leftoverFrames * OUTPUT_CHANNELS;
     count -= leftoverFrames;
-  }
-
-  if (count == 0) {
-    return;
+    if (count == 0) {
+      return;
+    }
   }
 
   ma_mutex_lock(&state.lock);
@@ -185,7 +184,7 @@ bool lovrAudioInit(const char* spatializer) {
   SpatializerConfig spatializerConfig = {
     .maxSourcesHint = MAX_SOURCES,
     .fixedBuffer = BUFFER_SIZE,
-    .sampleRate = 44100
+    .sampleRate = PLAYBACK_SAMPLE_RATE
   };
 
   for (size_t i = 0; i < sizeof(spatializers) / sizeof(spatializers[0]); i++) {
@@ -264,8 +263,8 @@ bool lovrAudioSetDevice(AudioType type, void* id, size_t size, uint32_t sampleRa
   ma_device_config config;
 
   if (type == AUDIO_PLAYBACK) {
-    lovrAssert(sampleRate == 44100, "");
-    lovrAssert(format == SAMPLE_F32, "");
+    lovrAssert(sampleRate == PLAYBACK_SAMPLE_RATE, "Playback sample rate must be %d", PLAYBACK_SAMPLE_RATE);
+    lovrAssert(format == SAMPLE_F32, "Playback format must be f32");
     config = ma_device_config_init(ma_device_type_playback);
     config.playback.pDeviceID = (ma_device_id*) id;
     config.playback.format = miniaudioFormats[format];
@@ -280,7 +279,7 @@ bool lovrAudioSetDevice(AudioType type, void* id, size_t size, uint32_t sampleRa
   }
 
   config.sampleRate = sampleRate;
-  config.performanceProfile = ma_performance_profile_low_latency;
+  config.periodSizeInFrames = BUFFER_SIZE;
   config.dataCallback = callbacks[type];
 
   ma_device_uninit(&state.devices[type]);
@@ -350,7 +349,7 @@ Source* lovrSourceCreate(SoundData* sound, bool spatial) {
     config.channelsIn = sound->channels;
     config.channelsOut = outputChannelCountForSource(source);
     config.sampleRateIn = sound->sampleRate;
-    config.sampleRateOut = 44100;
+    config.sampleRateOut = PLAYBACK_SAMPLE_RATE;
 
     ma_data_converter* converter = malloc(sizeof(ma_data_converter));
     ma_result converterStatus = ma_data_converter_init(&config, converter);
diff --git a/src/modules/audio/audio.h b/src/modules/audio/audio.h
index 674f9a15..4f05a07e 100644
--- a/src/modules/audio/audio.h
+++ b/src/modules/audio/audio.h
@@ -4,6 +4,8 @@
 
 #pragma once
 
+#define PLAYBACK_SAMPLE_RATE 48000
+
 struct SoundData;
 
 typedef struct Source Source;
diff --git a/src/resources/Activity_vrapi.java b/src/resources/Activity_vrapi.java
index c3c6ea82..2da559ed 100644
--- a/src/resources/Activity_vrapi.java
+++ b/src/resources/Activity_vrapi.java
@@ -1,10 +1,7 @@
 package org.lovr.app;
-import android.app.NativeActivity;
 import android.Manifest;
 import android.app.NativeActivity;
 import android.content.pm.PackageManager;
-import android.os.Bundle;
-import android.util.Log;
 
 public class Activity extends NativeActivity {
   static {
@@ -12,12 +9,6 @@ public class Activity extends NativeActivity {
     System.loadLibrary("vrapi");
   }
 
-  @Override
-  protected void onCreate(Bundle savedInstanceState) {
-    super.onCreate(savedInstanceState);
-    Log.i("LOVR", "MainActivity.onCreate()");
-  }
-
   protected native void lovrPermissionEvent(int permission, boolean granted);
 
   @Override
@@ -25,12 +16,10 @@ public class Activity extends NativeActivity {
   {
     if(grantResults[0] == PackageManager.PERMISSION_GRANTED)
     {
-      Log.i("LOVR", "RECORD_AUDIO granted.");
       lovrPermissionEvent(0, true);
     }
     else
     {
-      Log.i("LOVR", "RECORD_AUDIO rejected.");
       lovrPermissionEvent(0, false);
     }
   }
@@ -40,12 +29,10 @@ public class Activity extends NativeActivity {
     int existingPermission = checkSelfPermission(Manifest.permission.RECORD_AUDIO);
     if(existingPermission != PackageManager.PERMISSION_GRANTED)
     {
-      Log.i("LOVR", "Asking for RECORD_AUDIO permissions.");
       requestPermissions(new String[]{Manifest.permission.RECORD_AUDIO}, 1);
     }
     else
     {
-      Log.i("LOVR", "RECORD_AUDIO already permitted.");
       lovrPermissionEvent(0, true);
     }
   }