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diff --git a/src/sound.h b/src/sound.h
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+/*
+ *  The Mana Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *
+ *  This file is part of The Mana Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef SOUND_H
+#define SOUND_H
+
+#ifdef __APPLE__
+#include <SDL_mixer/SDL_mixer.h>
+#else
+#include <SDL_mixer.h>
+#endif
+
+#include "configlistener.h"
+
+#include <string>
+
+/** Sound engine
+ *
+ * \ingroup CORE
+ */
+class Sound : public ConfigListener
+{
+    public:
+        Sound();
+        ~Sound();
+
+        void optionChanged(const std::string &value);
+
+        /**
+         * Installs the sound engine.
+         */
+        void init();
+
+        /**
+         * Removes all sound functionalities.
+         */
+        void close();
+
+        /**
+         * Starts background music.
+         *
+         * @param path The full path to the music file.
+         */
+        void playMusic(const std::string &path);
+
+        /**
+         * Stops currently running background music track.
+         */
+        void stopMusic();
+
+        /**
+         * Fades in background music.
+         *
+         * @param path The full path to the music file.
+         * @param ms   Duration of fade-in effect (ms)
+         */
+        void fadeInMusic(const std::string &path, int ms = 2000);
+
+        /**
+         * Fades out currently running background music track.
+         *
+         * @param ms   Duration of fade-out effect (ms)
+         */
+        void fadeOutMusic(int ms);
+
+        int getMaxVolume() const;
+
+        void setMusicVolume(int volume);
+        void setSfxVolume(int volume);
+
+        /**
+         * Plays an item.
+         *
+         * @param path The resource path to the sound file.
+         */
+        void playSfx(const std::string &path);
+
+        /**
+         * Plays an item for gui.
+         *
+         * @param path The resource path to the sound file.
+         */
+        void playGuiSfx(const std::string &path);
+
+        void changeAudio();
+
+        void volumeOff();
+
+        void volumeRestore();
+
+    private:
+        /** Logs various info about sound device. */
+        void info();
+
+        /** Halts and frees currently playing music. */
+        void haltMusic();
+
+        bool mInstalled;
+
+        int mSfxVolume;
+        int mMusicVolume;
+
+        std::string mCurrentMusicFile;
+        Mix_Music *mMusic;
+        bool mPlayBattle;
+        bool mPlayGui;
+        bool mPlayMusic;
+};
+
+extern Sound sound;
+
+#endif