I'm a mac user and have been looking for this for a looooong time.
DL the mac version and run the pictods.sh file and this is what I get
cd lib java -Djava.library.path="." -cp .:swt.jar:org.pictods.jar org.pictods.ui.PictodsUI
It's a plain text file that looks like linux command line to me. I tried DL the linux version to see waht the difference was, and there is none. Same files exactly. If anyone knows how to get this running, could lend a brotha a hand?