Please use CVS to obtain the current JMatIO verision.
cvs -d:pserver:anonymous@jmatio.cvs.sourceforge.net:/cvsroot/jmatio login
cvs -z3 -d:pserver:anonymous@jmatio.cvs.sourceforge.net:/cvsroot/jmatio co -P JMatIO
For contact and information please e-mail me: wgradkowski at gmail dot com
This project is also available at mathworks site