能够将所有的 mp3 mp2 文件解码并保存为wav文件，可以直接播放。 采样率等信息都是自动从header里面提取出来并写到wav文件头中-Be able to decode all of the mp3 mp2 file and save it as a wav file can be played. Sampling rate and other information are automatically extracted from a header inside ou