I am currently running the latest version of Zenphoto (not a nightly) and was wondering if its possible to use IPTC data in album.php as when I've tried it I cant get it to display?

Sorry, not sure what you want here. IPTC data is part of an image. Anyway, look at the fields in the album edit--both for the album and for the images. Any of these fields can be displayed. See also the functions `getImageData()` and `getAlbumData()` Plus the multitude of individual functions for database fields.

The database fields are all populated from the image EXIF/IPTC data when the image is first discovered.

Thank you that cleared it up enough for me to figure it out.