How can I define a custom field that works as an image upload? Should be fairly basic but I can't seem to find the solution.
Let's say you create the post type 'book' and want to create 3 fields: cover, back, index... I don't know...
I've done similar stuff in the past with flutter/magic fields but they don't seem to be updated or support native WP3 custom post types.
Alternatives anyone? Thanks in advance