简单的问题http://www.3lian.com/flash/mid.htmlhttp://mp3.baidu.com/m?f=ms&tn=baidump3&ct=134217728&lf=&rn=&word=%D2%F4%C0%D6%BA%D0&lm=-1http://mp3.baidu.com/m?f=ms&tn=baidump3&ct=134217728&lf=&rn=&word=mid++&lm=-1