Are your audio needs more advanced?

This far we have just talked about SimpleAudioEngine. For most games, SimpleAudioEngine provides all the functionality that they need. If your audio needs move beyond what SimpleAudioEngine can provide, Cocos2d-x also offers a second choice called just AudioEngine.

SimpleAudio Engine versus Audio Engine

原文: http://docs.cocos.com/cocos2d-x/manual/zh/audio/engines.html