HumViewer works pretty good in Linux. If anyone is interested here is the contents of a shell script I'm using to bring it up.
java -Xms128m -Xmx1024m -cp "./jar/HumViewer.jar:ext/JMF/lib/jmf.jar:ext/JMF/lib/customizer.jar:ext/JMF/lib/mediaplayer.jar:ext/JMF/lib/multiplayer.jar:ext/log4j/log4j-1.2.15.jar:ext/forms-1.3.0/forms-1.3.0.jar:." HumViewer.HumViewer