linux下的简单音频播放软件，支持wav等基本格式，代码很小，适合移植到嵌入式设备使用-linux under the simple audio player software, and other basic support wav format, the code is very small, suitable for transplant to the use of embedded devices

播放任意长度WAVE文件的程序，大家可以对比参考-Arbitrary length play WAVE files, we can contrast the reference

Bits of the interrupt register.