一个简单的MP3音乐播放器，采用系统内置的MCI命令完成，有打开MP3音乐文件、播放音乐、暂停音乐、停止播放、进度条显示等功能，界面图标均属原创。-A simple MP3 music player, with the completion of the MCI command system built with open MP3 music files, playing music, pause music to stop playing, the progress bar display f