A hearty thanks to Tex for adding the metadata information in Nautilus. I have installed it to a fully updated Zen, but the additional entries do not show after restarting. Apparently I am missing some dependencies which are: python-nautilus, python-mutagen and python-pyexiv2. I can find mutagen but not python-mutagen (don't know if it's the same). Also have installed nautilus-python and pyexiv2.
Hope someone can help with this. Been waiting for file manger metadata since the demise of KDE3.