AutoHotkey or Java VirtualPiano MIDI Converter and Player.

Hi This project is a program which converts MIDI files into the Virtual Piano's keyboard script and plays it. It should play it impeccably. [login to view URL] The link above leads to a site with lots of MIDI files for you to experiment on. For you to have an idea of what it should sound like, press play. You've done it? Good. That's what it needs to sound like, except it needs to be played by the program on VirtualPiano.net. The program is to be a simple to use GUI where I just need to press "open file", choose the track, then a button shows up saying "play". When I press play, it is the minimize the window (and only minimize) then have an interval of two seconds before it starts playing. The playing should be exactly as seen in the website mentioned above when you click the play button. The program can be either a Jar file or an AutoHotkey file. Although AutoHotkey would be more preferable Thank you.