"Processing is an open source programming language and environment for people who want to program images, animation, and sound. It is used by students, artists, designers, architects, researchers, and hobbyists for learning, prototyping, and production. It is created to teach fundamentals of computer programming within a visual context and to serve as a software sketchbook and professional production tool. Processing is developed by artists and designers as an alternative to proprietary software tools in the same domain." -http://processing.org/
Processing can be used in conjuction with RoombaComm Java Library to write code for communicating with the Roomba.
Installation and Example Program
Processing does not require installation; It can be run from its folder or CD. Here is the step-by-step required to run RoombaTune, an application that allows the user to use the roomba as a musical instrument through the keyboard.
Download Processing (the necessary libraries are included)