Summary so far:It has been decided we cannot use tango. So let us move forward.
We should find an alternaive that does allow us to go for GPL.
Here are some possibilities:
* BlueSphere: http://svgicons.sourceforge.net/ -- SVG, so resizeable without distortion. BSD licence. See also http://www.kde-look.org/content/show.php?content=4276 * Shiira: http://hmdt-web.net/shiira/icon-e.html -- several good options imho. * idesk: http://idesk.sourceforge.net/wiki/index.php/Main_Page (not sure if this has icons or is just a desktop tool) * FreeIcons: http://realopen.org/projects/fics/ * Marbles? http://www.kde-look.org/content/show.php?content=1581 -- not sure about licence * XOOPS icons: http://www.nongnu.org/matt-xoops/ * http://themes.freshmeat.net/projects/aquafusion/
And http://www.maxpower.ca/free-icons/2006/03/05/
Lets pick one, or go for the best option: volunteer to design a Drupal-specific set! :)
Bèr