Cocos2D对音乐/音效播放的封装已经很好了，下边是例子：
定义2个文件：
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#define MUSIC_FILE "LOLBgMusic.mp3"
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#define EFFECT_FILE "Attack.wav"
在初始化的时候预加载音乐/音效文件：
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CocosDenshion::SimpleAudioEngine::sharedEngine()->preloadBackgroundMusic(MUSIC_FILE);
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CocosDenshion::SimpleAudioEngine::sharedEngine()->preloadEffect( EFFECT_FILE );
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CocosDenshion::SimpleAudioEngine::sharedEngine()->setEffectsVolume(0.5);
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CocosDenshion::SimpleAudioEngine::sharedEngine()->setBackgroundMusicVolume(0.5);
播放：
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CocosDenshion::SimpleAudioEngine::sharedEngine()->playBackgroundMusic(MUSIC_FILE,true);
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CocosDenshion::SimpleAudioEngine::sharedEngine()->playEffect(EFFECT_FILE);
其他相关函数：
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SimpleAudioEngine::sharedEngine()->stopBackgroundMusic();
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SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic();
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SimpleAudioEngine::sharedEngine()->resumeBackgroundMusic();
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SimpleAudioEngine::sharedEngine()->rewindBackgroundMusic();
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SimpleAudioEngine::sharedEngine()->isBackgroundMusicPlaying()
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SimpleAudioEngine::sharedEngine()->setBackgroundMusicVolume(SimpleAudioEngine::sharedEngine()->getBackgroundMusicVolume() + 0.1f);
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SimpleAudioEngine::sharedEngine()->pauseEffect(m_nSoundId);
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SimpleAudioEngine::sharedEngine()->resumeEffect(m_nSoundId);
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SimpleAudioEngine::sharedEngine()->pauseAllEffects();
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SimpleAudioEngine::sharedEngine()->resumeAllEffects();
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SimpleAudioEngine::sharedEngine()->stopAllEffects();
Cocos2d 播放音效
原文：http://blog.csdn.net/zhenyu5211314/article/details/39617029
