Hello. I'm trying to make some kind of drum app (like for example drum meister for iPhone) with Processing and I've got a major problem. The program is supposed to have buttons which contain the sounds and they should be played when a huge line passes it. I have no idea how this is going to work, any suggestions?

Also, I've tried downloading MidiBus but it doesn't seem to be found by Processing though the library for it is where it should be. This is a school assignment and we didn't really know it was this hard.

I appreciate really help with this.