You will need subversion, and a toolchain.
In Ubuntu you can get subversion using: sudo apt-get install subversion
To download the RobotSee interpreter source:
svn co https://robotseeintrptr.svn.sourceforge.net/svnroot/robotseeintrptr robotseeintrptr
Anyone can get/Checkout the source. You will need a SourceForge account to check in any changes you make.
To build simply execute make.
The Linux version of RobotSee is still setup for Chumby ( Hard-coded serial port ).
I also have not checked in the Linux sound module yet. I have one up and running using gstreamer. I just need to get it in sourceforge.