MIDI钢琴模拟软件，里面有MIDI编程的主要思想，内核是由外国人写的，经过了一高手在里面加了注释，总体还是不错的。-MIDI piano simulation software, which has MIDI programming, main idea, the kernel is written by foreigners, after a master in it added a note, the overall is good.

外国人写波形音频示波器，很大很强大，不过是win32程序-wave sound view