说明：  linux OSS编程例子.打开wav文件,并取出其中PCM数据，通过OSS接口函数实现播放．可以调节音量．　小而精．供大家参考．
(linux OSS programming examples. Open wav file, and removed one of PCM data, the adoption of OSS player interface function. It can adjust the volume. Small but excellent. For your reference.)