很好的媒体播放器，该媒体播放器可以播放Wav和CD光盘。本章主要介绍多媒体相关知识。包括DirectX SDK进行多媒体开发，对混合器设备进行操作和访问，对音量进行获取与设置，播放Wav文件，打开和关闭CD设备，对CD进行播放、停止、前进、后退操作等。

-good media players, the media player that can play CD and Wav. This chapter introduces multimedia related knowledge. DirectX SDK include multimedia development, the mixer equipment operation and visit, for access to the volume and settings, players Wav document, open and close CD equipment, a CD player, stop, forward, back operation.