diff --git a/src/core/core.h b/src/core/core.h
index b12281d4c..9c5adaaa5 100644
--- a/src/core/core.h
+++ b/src/core/core.h
@@ -54,6 +54,7 @@ struct mCore {
 	void (*getVideoBuffer)(struct mCore*, color_t** buffer, size_t* stride);
 
 	struct blip_t* (*getAudioChannel)(struct mCore*, int ch);
+	void (*setAudioBufferSize)(struct mCore*, size_t samples);
 
 	void (*setAVStream)(struct mCore*, struct mAVStream*);
 
diff --git a/src/gb/audio.c b/src/gb/audio.c
index e0324dcb7..0b9f5df3a 100644
--- a/src/gb/audio.c
+++ b/src/gb/audio.c
@@ -76,6 +76,15 @@ void GBAudioReset(struct GBAudio* audio) {
 	audio->playingCh4 = false;
 }
 
+void GBAudioResizeBuffer(struct GBAudio* audio, size_t samples) {
+	mCoreSyncLockAudio(audio->p->sync);
+	audio->samples = samples;
+	blip_clear(audio->left);
+	blip_clear(audio->right);
+	audio->clock = 0;
+	mCoreSyncConsumeAudio(audio->p->sync);
+}
+
 void GBAudioWriteNR10(struct GBAudio* audio, uint8_t value) {
 	audio->ch1.shift = GBAudioRegisterSquareSweepGetShift(value);
 	audio->ch1.direction = GBAudioRegisterSquareSweepGetDirection(value);
diff --git a/src/gb/audio.h b/src/gb/audio.h
index e9e66c18b..08ab44697 100644
--- a/src/gb/audio.h
+++ b/src/gb/audio.h
@@ -187,6 +187,8 @@ void GBAudioInit(struct GBAudio* audio, size_t samples);
 void GBAudioDeinit(struct GBAudio* audio);
 void GBAudioReset(struct GBAudio* audio);
 
+void GBAudioResizeBuffer(struct GBAudio* audio, size_t samples);
+
 void GBAudioWriteNR10(struct GBAudio* audio, uint8_t);
 void GBAudioWriteNR11(struct GBAudio* audio, uint8_t);
 void GBAudioWriteNR12(struct GBAudio* audio, uint8_t);
diff --git a/src/gb/core.c b/src/gb/core.c
index 33e1dd71c..1b063491b 100644
--- a/src/gb/core.c
+++ b/src/gb/core.c
@@ -96,6 +96,11 @@ static struct blip_t* _GBCoreGetAudioChannel(struct mCore* core, int ch) {
 	}
 }
 
+static void _GBCoreSetAudioBufferSize(struct mCore* core, size_t samples) {
+	struct GB* gb = core->board;
+	GBAudioResizeBuffer(&gb->audio, samples);
+}
+
 static void _GBCoreSetAVStream(struct mCore* core, struct mAVStream* stream) {
 	// TODO
 }
@@ -225,6 +230,7 @@ struct mCore* GBCoreCreate(void) {
 	core->setVideoBuffer = _GBCoreSetVideoBuffer;
 	core->getVideoBuffer = _GBCoreGetVideoBuffer;
 	core->getAudioChannel = _GBCoreGetAudioChannel;
+	core->setAudioBufferSize = _GBCoreSetAudioBufferSize;
 	core->setAVStream = _GBCoreSetAVStream;
 	core->isROM = GBIsROM;
 	core->loadROM = _GBCoreLoadROM;
diff --git a/src/gba/core.c b/src/gba/core.c
index 99c0c181d..b7f11c898 100644
--- a/src/gba/core.c
+++ b/src/gba/core.c
@@ -127,6 +127,11 @@ static struct blip_t* _GBACoreGetAudioChannel(struct mCore* core, int ch) {
 	}
 }
 
+static void _GBACoreSetAudioBufferSize(struct mCore* core, size_t samples) {
+	struct GBA* gba = core->board;
+	GBAAudioResizeBuffer(&gba->audio, samples);
+}
+
 static void _GBACoreSetAVStream(struct mCore* core, struct mAVStream* stream) {
 	struct GBA* gba = core->board;
 	gba->stream = stream;
@@ -261,6 +266,7 @@ struct mCore* GBACoreCreate(void) {
 	core->setVideoBuffer = _GBACoreSetVideoBuffer;
 	core->getVideoBuffer = _GBACoreGetVideoBuffer;
 	core->getAudioChannel = _GBACoreGetAudioChannel;
+	core->setAudioBufferSize = _GBACoreSetAudioBufferSize;
 	core->setAVStream = _GBACoreSetAVStream;
 	core->isROM = GBAIsROM;
 	core->loadROM = _GBACoreLoadROM;
diff --git a/src/platform/3ds/main.c b/src/platform/3ds/main.c
index 557c91b82..c5f92f2ce 100644
--- a/src/platform/3ds/main.c
+++ b/src/platform/3ds/main.c
@@ -273,7 +273,7 @@ static void _setup(struct mGUIRunner* runner) {
 		screenMode = mode;
 	}
 
-	GBAAudioResizeBuffer(&((struct GBA*) runner->core->board)->audio, AUDIO_SAMPLES);
+	runner->core->setAudioBufferSize(runner->core, AUDIO_SAMPLES);
 }
 
 static void _gameLoaded(struct mGUIRunner* runner) {
diff --git a/src/platform/libretro/libretro.c b/src/platform/libretro/libretro.c
index 944dd4704..2066dd891 100644
--- a/src/platform/libretro/libretro.c
+++ b/src/platform/libretro/libretro.c
@@ -205,7 +205,7 @@ void retro_init(void) {
 	mCoreInitConfig(core, NULL);
 	core->init(core);
 	struct GBA* gba = core->board;
-	gba->stream = &stream;
+	core->setAVStream(core, &stream);
 	if (rumbleCallback) {
 		gba->rumble = &rumble;
 	}
@@ -224,7 +224,7 @@ void retro_init(void) {
 	outputBuffer = malloc(256 * VIDEO_VERTICAL_PIXELS * BYTES_PER_PIXEL);
 	core->setVideoBuffer(core, outputBuffer, 256);
 
-	GBAAudioResizeBuffer(&gba->audio, SAMPLES);
+	core->setAudioBufferSize(core, SAMPLES);
 
 	blip_set_rates(core->getAudioChannel(core, 0), GBA_ARM7TDMI_FREQUENCY, 32768);
 	blip_set_rates(core->getAudioChannel(core, 1), GBA_ARM7TDMI_FREQUENCY, 32768);
diff --git a/src/platform/openemu/mGBAGameCore.m b/src/platform/openemu/mGBAGameCore.m
index d476cf2e2..4eaa46890 100644
--- a/src/platform/openemu/mGBAGameCore.m
+++ b/src/platform/openemu/mGBAGameCore.m
@@ -73,9 +73,9 @@
 		core->desiredVideoDimensions(core, &width, &height);
 		outputBuffer = malloc(width * height * BYTES_PER_PIXEL);
 		core->setVideoBuffer(core, outputBuffer, width);
+		core->setAudioBufferSize(core, SAMPLES);
 
 		gba = core->board;
-		GBAAudioResizeBuffer(&gba->audio, SAMPLES);
 		GBACheatDeviceCreate(&cheats);
 		GBACheatAttachDevice(gba, &cheats);
 		cheatSets = [[NSMutableDictionary alloc] init];
diff --git a/src/platform/qt/GameController.cpp b/src/platform/qt/GameController.cpp
index d46d5f76c..e28e3a029 100644
--- a/src/platform/qt/GameController.cpp
+++ b/src/platform/qt/GameController.cpp
@@ -932,7 +932,7 @@ void GameController::updateKeys() {
 void GameController::redoSamples(int samples) {
 	// TODO: Put back audio buffers
 	if (m_threadContext.core) {
-		GBAAudioResizeBuffer(&static_cast<GBA*>(m_threadContext.core->board)->audio, samples);
+		m_threadContext.core->setAudioBufferSize(m_threadContext.core, samples);
 	}
 	QMetaObject::invokeMethod(m_audioProcessor, "inputParametersChanged");
 }
diff --git a/src/platform/wii/main.c b/src/platform/wii/main.c
index 3e3154df3..466a317da 100644
--- a/src/platform/wii/main.c
+++ b/src/platform/wii/main.c
@@ -569,7 +569,7 @@ void _setup(struct mGUIRunner* runner) {
 	outputBuffer = memalign(32, 256 * 256 * BYTES_PER_PIXEL);
 	runner->core->setVideoBuffer(runner->core, outputBuffer, 256);
 
-	GBAAudioResizeBuffer(&((struct GBA*) runner->core->board)->audio, SAMPLES);
+	runner->core->setAudioBufferSize(runner->core, SAMPLES);
 
 	double ratio = GBAAudioCalculateRatio(1, 60 / 1.001, 1);
 	blip_set_rates(runner->core->getAudioChannel(runner->core, 0), GBA_ARM7TDMI_FREQUENCY, 48000 * ratio);