It\'s very simple, with a catch.
Click on the little wrench icon on the top right of the zepo screen. The Preferences screen has an option to choose the cache directory. You can choose any directory including ones on /mnt/card or /mnt/cf. BUT, that directory must already exist! I created a zepo cache directory on my sd card, then went back to zepo and selected it in the Preferences. Works fine...
