一个简单的媒体播放器程序，主要适用于delphi初学者练习-A simple media player program, mainly is suitable for the Delphi beginners practice

MCI接口调用实现MIDI音符播放，本程序用于练习和弦听辨，也是Windows MIDI输出功能的范例。-MCI interface calls to play MIDI notes, and an example of the procedures used to practice chords listen discernible, Windows MIDI output function.