Hello,
the past day I made a Firefox extension to extend Zotero.
You can download and install it from:
https://zoteroexport.mozdev.org
When you select an item, you will have the option of exporting directly to the filesystem.
You can set up the extension to export in the iLiad's format. In this case, it makes a container directory with a manifest file, etc.
There are some small bugs. They are described on the above link as well.
Updates:
* link to the installer