I just bought and downloaded the Midi2Wav Recorder.  I downloaded it and installed it on my Windows xp.  If I do not do the test of my soundboard, no sound is recorded in the wav file I am trying to make from a midi file.  If I do the test, immediately my screen turns blue, the computer tries to reboot but freezes in the middle of the booting process.  And why do you not have a customer service contact mail address at your site.  Does your program actually work?