artwork in extensions licensed with GPL/LGPL/MPL

Adam Kowalewski <[email protected]> Fri, 24 Jul 2009 02:03:49 -0700 (PDT)

Newsgroups	gmane.comp.mozilla.license
Organization	http://groups.google.com
Message-ID	<[email protected]>

Hello,

we received some nice and at the moment still 'not licensed at all'
artwork for our Komodo extension 'Koala' ( http://koala.mozdev.org/ )
which itself is licensed with GPL/LGPL/MPL.

Our artist would like to protect her name, something like 'cc-by'.

How can we do it - distribute our extension as one xpi file and
include artwork files which are licensed differently. Which license
should we use for those art files?

big THX
adam