This is already a long standing desired feature in the TODO file [1], that we should take care of at some point soon. I think it would be useful stuff.

For reference, it would be needed to add a new function to src/flicksoup/fsp-session.[ch] wrapping the following API method:

http://www.flickr.com/services/api/flickr.photos.licenses.setLicense.htm

...then modifying the details dialog to allow the user selecting the desired license, and make the controller take care of that after uploading each picture (just in the same way pictures are added to albums and groups).

To avoid frogr from doing extra unneeded work after uploading each picture, it could be useful to provide the user, along with the list of available licenses, the option to use the "default license as set in flickr". That way, the controller would not do anything at all and frogr would keep working as it's doint it right now.

[1] http://git.gnome.org/browse/frogr/tree/TODO