diff --git a/src/audio/pulseaudio/SDL_pulseaudio.c b/src/audio/pulseaudio/SDL_pulseaudio.c
index f0c33d03f..5644802c9 100644
--- a/src/audio/pulseaudio/SDL_pulseaudio.c
+++ b/src/audio/pulseaudio/SDL_pulseaudio.c
@@ -869,8 +869,6 @@ static int SDLCALL HotplugThread(void *data)
 
 static void PULSEAUDIO_DetectDevices(SDL_AudioDevice **default_output, SDL_AudioDevice **default_capture)
 {
-    SDL_Semaphore *ready_sem = SDL_CreateSemaphore(0);
-
     PULSEAUDIO_pa_threaded_mainloop_lock(pulseaudio_threaded_mainloop);
     WaitForPulseOperation(PULSEAUDIO_pa_context_get_server_info(pulseaudio_context, ServerInfoCallback, NULL));
     WaitForPulseOperation(PULSEAUDIO_pa_context_get_sink_info_list(pulseaudio_context, SinkInfoCallback, (void *)((intptr_t)SDL_TRUE)));
@@ -890,9 +888,7 @@ static void PULSEAUDIO_DetectDevices(SDL_AudioDevice **default_output, SDL_Audio
 
     /* ok, we have a sane list, let's set up hotplug notifications now... */
     SDL_AtomicSet(&pulseaudio_hotplug_thread_active, 1);
-    pulseaudio_hotplug_thread = SDL_CreateThreadInternal(HotplugThread, "PulseHotplug", 256 * 1024, ready_sem);  /* !!! FIXME: this can probably survive in significantly less stack space. */
-    SDL_WaitSemaphore(ready_sem);
-    SDL_DestroySemaphore(ready_sem);
+    pulseaudio_hotplug_thread = SDL_CreateThreadInternal(HotplugThread, "PulseHotplug", 256 * 1024, NULL);  /* !!! FIXME: this can probably survive in significantly less stack space. */
 }
 
 static void PULSEAUDIO_Deinitialize(void)
diff --git a/src/dynapi/SDL_dynapi.sym b/src/dynapi/SDL_dynapi.sym
index 90da7b5fa..4375e2c0a 100644
--- a/src/dynapi/SDL_dynapi.sym
+++ b/src/dynapi/SDL_dynapi.sym
@@ -42,7 +42,6 @@ SDL3_0.0.0 {
     SDL_CloseJoystick;
     SDL_CloseSensor;
     SDL_ComposeCustomBlendMode;
-    SDL_ConvertAudioSamples;
     SDL_ConvertEventToRenderCoordinates;
     SDL_ConvertPixels;
     SDL_ConvertSurface;
@@ -487,7 +486,6 @@ SDL3_0.0.0 {
     SDL_OpenSensor;
     SDL_OpenURL;
     SDL_PeepEvents;
-    SDL_PlayAudioDevice;
     SDL_PollEvent;
     SDL_PostSemaphore;
     SDL_PremultiplyAlpha;
diff --git a/src/dynapi/SDL_dynapi_overrides.h b/src/dynapi/SDL_dynapi_overrides.h
index 452819fca..25f044386 100644
--- a/src/dynapi/SDL_dynapi_overrides.h
+++ b/src/dynapi/SDL_dynapi_overrides.h
@@ -66,7 +66,6 @@
 #define SDL_CloseJoystick SDL_CloseJoystick_REAL
 #define SDL_CloseSensor SDL_CloseSensor_REAL
 #define SDL_ComposeCustomBlendMode SDL_ComposeCustomBlendMode_REAL
-#define SDL_ConvertAudioSamples SDL_ConvertAudioSamples_REAL
 #define SDL_ConvertEventToRenderCoordinates SDL_ConvertEventToRenderCoordinates_REAL
 #define SDL_ConvertPixels SDL_ConvertPixels_REAL
 #define SDL_ConvertSurface SDL_ConvertSurface_REAL
@@ -511,7 +510,6 @@
 #define SDL_OpenSensor SDL_OpenSensor_REAL
 #define SDL_OpenURL SDL_OpenURL_REAL
 #define SDL_PeepEvents SDL_PeepEvents_REAL
-#define SDL_PlayAudioDevice SDL_PlayAudioDevice_REAL
 #define SDL_PollEvent SDL_PollEvent_REAL
 #define SDL_PostSemaphore SDL_PostSemaphore_REAL
 #define SDL_PremultiplyAlpha SDL_PremultiplyAlpha_REAL
@@ -579,7 +577,6 @@
 #define SDL_SendGamepadEffect SDL_SendGamepadEffect_REAL
 #define SDL_SendJoystickEffect SDL_SendJoystickEffect_REAL
 #define SDL_SetAssertionHandler SDL_SetAssertionHandler_REAL
-#define SDL_SetAudioStreamFormat SDL_SetAudioStreamFormat_REAL
 #define SDL_SetClipboardData SDL_SetClipboardData_REAL
 #define SDL_SetClipboardText SDL_SetClipboardText_REAL
 #define SDL_SetCursor SDL_SetCursor_REAL
diff --git a/src/dynapi/SDL_dynapi_procs.h b/src/dynapi/SDL_dynapi_procs.h
index 78eaa0409..fccf824f2 100644
--- a/src/dynapi/SDL_dynapi_procs.h
+++ b/src/dynapi/SDL_dynapi_procs.h
@@ -148,7 +148,6 @@ SDL_DYNAPI_PROC(void,SDL_CloseGamepad,(SDL_Gamepad *a),(a),)
 SDL_DYNAPI_PROC(void,SDL_CloseJoystick,(SDL_Joystick *a),(a),)
 SDL_DYNAPI_PROC(void,SDL_CloseSensor,(SDL_Sensor *a),(a),)
 SDL_DYNAPI_PROC(SDL_BlendMode,SDL_ComposeCustomBlendMode,(SDL_BlendFactor a, SDL_BlendFactor b, SDL_BlendOperation c, SDL_BlendFactor d, SDL_BlendFactor e, SDL_BlendOperation f),(a,b,c,d,e,f),return)
-SDL_DYNAPI_PROC(int,SDL_ConvertAudioSamples,(SDL_AudioFormat a, Uint8 b, int c, const Uint8 *d, int e, SDL_AudioFormat f, Uint8 g, int h, Uint8 **i, int *j),(a,b,c,d,e,f,g,h,i,j),return)
 SDL_DYNAPI_PROC(int,SDL_ConvertEventToRenderCoordinates,(SDL_Renderer *a, SDL_Event *b),(a,b),return)
 SDL_DYNAPI_PROC(int,SDL_ConvertPixels,(int a, int b, Uint32 c, const void *d, int e, Uint32 f, void *g, int h),(a,b,c,d,e,f,g,h),return)
 SDL_DYNAPI_PROC(SDL_Surface*,SDL_ConvertSurface,(SDL_Surface *a, const SDL_PixelFormat *b),(a,b),return)
@@ -570,7 +569,6 @@ SDL_DYNAPI_PROC(SDL_Joystick*,SDL_OpenJoystick,(SDL_JoystickID a),(a),return)
 SDL_DYNAPI_PROC(SDL_Sensor*,SDL_OpenSensor,(SDL_SensorID a),(a),return)
 SDL_DYNAPI_PROC(int,SDL_OpenURL,(const char *a),(a),return)
 SDL_DYNAPI_PROC(int,SDL_PeepEvents,(SDL_Event *a, int b, SDL_eventaction c, Uint32 d, Uint32 e),(a,b,c,d,e),return)
-SDL_DYNAPI_PROC(int,SDL_PlayAudioDevice,(SDL_AudioDeviceID a),(a),return)
 SDL_DYNAPI_PROC(int,SDL_PollEvent,(SDL_Event *a),(a),return)
 SDL_DYNAPI_PROC(int,SDL_PostSemaphore,(SDL_Semaphore *a),(a),return)
 SDL_DYNAPI_PROC(int,SDL_PremultiplyAlpha,(int a, int b, Uint32 c, const void *d, int e, Uint32 f, void *g, int h),(a,b,c,d,e,f,g,h),return)
@@ -636,7 +634,6 @@ SDL_DYNAPI_PROC(SDL_bool,SDL_ScreenSaverEnabled,(void),(),return)
 SDL_DYNAPI_PROC(int,SDL_SendGamepadEffect,(SDL_Gamepad *a, const void *b, int c),(a,b,c),return)
 SDL_DYNAPI_PROC(int,SDL_SendJoystickEffect,(SDL_Joystick *a, const void *b, int c),(a,b,c),return)
 SDL_DYNAPI_PROC(void,SDL_SetAssertionHandler,(SDL_AssertionHandler a, void *b),(a,b),)
-SDL_DYNAPI_PROC(int,SDL_SetAudioStreamFormat,(SDL_AudioStream *a, SDL_AudioFormat b, int c, int d, SDL_AudioFormat e, int f, int g),(a,b,c,d,e,f,g),return)
 SDL_DYNAPI_PROC(int,SDL_SetClipboardData,(SDL_ClipboardDataCallback a, SDL_ClipboardCleanupCallback b, void *c, const char **d, size_t e),(a,b,c,d,e),return)
 SDL_DYNAPI_PROC(int,SDL_SetClipboardText,(const char *a),(a),return)
 SDL_DYNAPI_PROC(int,SDL_SetCursor,(SDL_Cursor *a),(a),return)