diff -r fb4b0c6dfdbd -r 53ffc8853008 hedgewars/SDLh.pas
--- a/hedgewars/SDLh.pas	Mon Jun 04 08:11:47 2012 -0400
+++ b/hedgewars/SDLh.pas	Mon Jun 04 21:32:30 2012 +0400
@@ -816,6 +816,8 @@
     TMixMusic = record
                 end;
 
+    TPostMix = procedure(udata: pointer; stream: PByte; len: LongInt); cdecl;
+
     {* SDL_net *}
     TIPAddress = record
                 host: LongWord;
@@ -946,6 +948,9 @@
 function  SDL_GL_SetAttribute(attr: TSDL_GLattr; value: LongInt): LongInt; cdecl; external SDLLibName;
 procedure SDL_GL_SwapBuffers; cdecl; external SDLLibName;
 
+procedure SDL_LockAudio; cdecl; external SDLLibName;
+procedure SDL_UnlockAudio; cdecl; external SDLLibName;
+
 function  SDL_NumJoysticks: LongInt; cdecl; external SDLLibName;
 function  SDL_JoystickName(idx: LongInt): PChar; cdecl; external SDLLibName;
 function  SDL_JoystickOpen(idx: LongInt): PSDL_Joystick; cdecl; external SDLLibName;
@@ -1000,6 +1005,7 @@
 
 function  Mix_OpenAudio(frequency: LongInt; format: Word; channels: LongInt; chunksize: LongInt): LongInt; cdecl; external SDL_MixerLibName;
 procedure Mix_CloseAudio; cdecl; external SDL_MixerLibName;
+function  Mix_QuerySpec(frequency: PLongInt; format: PWord; channels: PLongInt): LongInt; cdecl; external SDL_MixerLibName;
 
 function  Mix_Volume(channel: LongInt; volume: LongInt): LongInt; cdecl; external SDL_MixerLibName;
 function  Mix_SetDistance(channel: LongInt; distance: Byte): LongInt; cdecl; external SDL_MixerLibName;
@@ -1027,6 +1033,8 @@
 function  Mix_FadeInChannelTimed(channel: LongInt; chunk: PMixChunk; loops: LongInt; fadems: LongInt; ticks: LongInt): LongInt; cdecl; external SDL_MixerLibName;
 function  Mix_FadeOutChannel(channel: LongInt; fadems: LongInt): LongInt; cdecl; external SDL_MixerLibName;
 
+procedure Mix_SetPostMix( mix_func: TPostMix; arg: pointer); cdecl; external SDL_MixerLibName;
+
 (*  SDL_image  *)
 function  IMG_Init(flags: LongInt): LongInt; {$IFDEF SDL_IMAGE_NEWER}cdecl; external SDL_ImageLibName;{$ENDIF}
 procedure IMG_Quit; {$IFDEF SDL_IMAGE_NEWER}cdecl; external SDL_ImageLibName;{$ENDIF}