在mars老师mp3播放器的基础上，添加了歌词滚动、歌词单行同步显示功能，并添加了从服务器下载时在任务栏进行进度提示的功能。-On the basis of an mp3 player of Mars teacher, adding the lyrics scroll, lyrics synchronous display line, and adding the downloaded from the server in the task bar to progress indication