Why won't my java program run on peoples computers?

I tried to checkout your project in CVS to use what kind of API's you're using, but nothing was there. I'm willing to bet that you need to bundle a library with your project. I've never worked with MIDI in Java, so I don't know much about it. Did you have to download a library to get your application running on your machine? Also, note that sound device stuff is OS-dependant. You might want to check out the page linked below.