Sync SDL3_mixer header -> wiki

SDL3_mixer/Mix_ChannelFinished.md

@@ -27,10 +27,6 @@ called as a result of [Mix_HaltChannel](Mix_HaltChannel)(), etc.
 The callback has a single parameter, `channel`, which says what mixer
 channel has just stopped.
 
-Do not call SDL_LockAudio() from this callback; you will either be inside
-the audio callback, or SDL_mixer will explicitly lock the audio before
-calling your callback.
-
 A NULL pointer will disable the callback.
 
 ## Version

SDL3_mixer/Mix_EffectDone_t.md

@@ -20,8 +20,6 @@ This gets called if the buffer plays out normally, or if you call
 [Mix_AllocateChannels](Mix_AllocateChannels)(), or unregister a callback
 while it's still playing.
 
-DO NOT EVER call SDL_LockAudio() from your callback function!
-
 ----
 [CategoryAPI](CategoryAPI), [CategoryAPIDatatype](CategoryAPIDatatype), [CategorySDLMixer](CategorySDLMixer)
 

SDL3_mixer/Mix_EffectFunc_t.md

@@ -28,8 +28,6 @@ its changed state down the mixing pipeline, through any other effect
 functions, then finally to be mixed with the rest of the channels and music
 for the final output stream.
 
-DO NOT EVER call SDL_LockAudio() from your callback function!
-
 ----
 [CategoryAPI](CategoryAPI), [CategoryAPIDatatype](CategoryAPIDatatype), [CategorySDLMixer](CategorySDLMixer)
 

SDL3_mixer/Mix_GetSoundFonts.md

@@ -25,7 +25,7 @@ function:
 - If the boolean _SDL hint_ `"SDL_FORCE_SOUNDFONTS"` is set, AND the
   `"SDL_SOUNDFONTS"` _environment variable_ is also set, this function will
   return that environment variable regardless of whether
-  [Mix_SetSoundFounts](Mix_SetSoundFounts)() was ever called.
+  [Mix_SetSoundFonts](Mix_SetSoundFonts)() was ever called.
 - Otherwise, if [Mix_SetSoundFonts](Mix_SetSoundFonts)() was successfully
   called with a non-NULL path, this function will return the string passed
   to that function.

SDL3_mixer/Mix_HookMusicFinished.md

@@ -31,10 +31,6 @@ It is legal to start a new music object playing in this callback (or
 restart the one that just stopped). If the music finished normally, this
 can be used to loop the music without a gap in the audio playback.
 
-Do not call SDL_LockAudio() from this callback; you will either be inside
-the audio callback, or SDL_mixer will explicitly lock the audio before
-calling your callback.
-
 A NULL pointer will disable the callback.
 
 ## Version

SDL3_mixer/Mix_MasterVolume.md

@@ -41,7 +41,7 @@ this function returns the previous (in this case, still-current) value.
 
 Note that the master volume does not affect any playing music; it is only
 applied when mixing chunks. Use [Mix_VolumeMusic](Mix_VolumeMusic)() for
-that.\
+that.
 
 ## Version
 

SDL3_mixer/Mix_QuerySpec.md

@@ -23,7 +23,7 @@ bool Mix_QuerySpec(int *frequency, SDL_AudioFormat *format, int *channels);
 
 ## Return Value
 
-(bool) Returns true if the audio device has been opened, true otherwise.
+(bool) Returns true if the audio device has been opened, false otherwise.
 
 ## Remarks
 

SDL3_mixer/Mix_RegisterEffect.md

@@ -77,9 +77,6 @@ After all these effects have finished processing, the callback registered
 through [Mix_SetPostMix](Mix_SetPostMix)() runs, and then the stream goes
 to the audio device.
 
-DO NOT EVER call SDL_LockAudio() from your callback function! You are
-already running in the audio thread and the lock is already held!
-
 Note that unlike most SDL and SDL_mixer functions, this function returns
 zero if there's an error, not on success. We apologize for the API design
 inconsistency here.