To be able to develop on and run Autoplot using Eclipse: 1. collect all filename extensions into one place In the Netbeans project, the contents of these files get concatenated automatically: org.virbo.datasource.DataSourceFactory.extensions These are spread throughout the META-INF directories of various source folders. To find them, use something like this: cd /autoplot cat `find . -name "*DataSourceFactory.extensions" | grep -v '/classes'` Take all of the lines (class names and filename extensions and put them in the first source path that Elipse identifies (currently this is the one in the AudioSystemDataSource/src/META-INF directory. 2. To launch the main Autoplot program run the main in this class: org.virbo.autoplot.AutoplotUI (You can easily find this using Shift-ALT-T, or Shift-Apple-T on a Mac)