9 files changed, 18 insertions, 0 deletions
diff --git a/src/sound/cocoa_s.cpp b/src/sound/cocoa_s.cpp
index 5642c36a0..9921cb0cf 100644
--- a/src/sound/cocoa_s.cpp
+++ b/src/sound/cocoa_s.cpp
@@ -1,5 +1,7 @@
 /* $Id$ */
 
+/** @file cocoa_s.cpp Sound driver for cocoa. */
+
 /*****************************************************************************
  *                             Cocoa sound driver                            *
  * Known things left to do:                                                  *
diff --git a/src/sound/cocoa_s.h b/src/sound/cocoa_s.h
index 9ec6ac5cb..079132c2d 100644
--- a/src/sound/cocoa_s.h
+++ b/src/sound/cocoa_s.h
@@ -1,5 +1,7 @@
 /* $Id$ */
 
+/** @file cocoa_s.h Base for Cocoa sound handling. */
+
 #ifndef SOUND_COCOA_H
 #define SOUND_COCOA_H
 
diff --git a/src/sound/null_s.cpp b/src/sound/null_s.cpp
index c8fe22ca3..03277ac8b 100644
--- a/src/sound/null_s.cpp
+++ b/src/sound/null_s.cpp
@@ -1,5 +1,7 @@
 /* $Id$ */
 
+/** @file null_s.cpp The sound driver that doesn't produce sound. */
+
 #include "../stdafx.h"
 #include "null_s.h"
 
diff --git a/src/sound/null_s.h b/src/sound/null_s.h
index 27b8d8980..49581fc18 100644
--- a/src/sound/null_s.h
+++ b/src/sound/null_s.h
@@ -1,5 +1,7 @@
 /* $Id$ */
 
+/** @file null_s.h Base for the sound of silence. */
+
 #ifndef SOUND_NULL_H
 #define SOUND_NULL_H
 
diff --git a/src/sound/sdl_s.cpp b/src/sound/sdl_s.cpp
index f9f40d4e3..753bce764 100644
--- a/src/sound/sdl_s.cpp
+++ b/src/sound/sdl_s.cpp
@@ -1,5 +1,7 @@
 /* $Id$ */
 
+/** @file sdl_s.cpp Playing sound via SDL. */
+
 #ifdef WITH_SDL
 
 #include "../stdafx.h"
diff --git a/src/sound/sdl_s.h b/src/sound/sdl_s.h
index 83edccc99..e897f8306 100644
--- a/src/sound/sdl_s.h
+++ b/src/sound/sdl_s.h
@@ -1,5 +1,7 @@
 /* $Id$ */
 
+/** @file sdl_s.h Base fo playing sound via SDL. */
+
 #ifndef SOUND_SDL_H
 #define SOUND_SDL_H
 
diff --git a/src/sound/sound_driver.hpp b/src/sound/sound_driver.hpp
index 55cc20be8..8f3f08579 100644
--- a/src/sound/sound_driver.hpp
+++ b/src/sound/sound_driver.hpp
@@ -1,5 +1,7 @@
 /* $Id$ */
 
+/** @file sound_driver.hpp Base for all sound drivers. */
+
 #ifndef SOUND_SOUND_DRIVER_HPP
 #define SOUND_SOUND_DRIVER_HPP
 
diff --git a/src/sound/win32_s.cpp b/src/sound/win32_s.cpp
index 386c6f4a5..66a7fde03 100644
--- a/src/sound/win32_s.cpp
+++ b/src/sound/win32_s.cpp
@@ -1,5 +1,7 @@
 /* $Id$ */
 
+/** @file win32_s.cpp Handling of sound for Windows. */
+
 #include "../stdafx.h"
 #include "../openttd.h"
 #include "../driver.h"
diff --git a/src/sound/win32_s.h b/src/sound/win32_s.h
index 8fbd8b0c1..71859af90 100644
--- a/src/sound/win32_s.h
+++ b/src/sound/win32_s.h
@@ -1,5 +1,7 @@
 /* $Id$ */
 
+/** @file win32_s.h Base for Windows sound handling. */
+
 #ifndef SOUND_WIN32_H
 #define SOUND_WIN32_H