LICENSES AND ORIGINS:

gnome-audio

Andreas Karlsson under the Creative Commons ShareAlike 2.0

Martyn Clement under the Creative Commons - Attribution-Share

Alike 2.0 Generic

Ivica Ico Bukvic (SlipStreamScapes) under the Creative Commons

- Attribution 3.0 Unported

See the packages' README for details.

Ekiga

Damien Sandras under GPLv2

KDE

The KDE developers under LGPLv2

Pidgin/Purple

The Pidgin developers under GPLv2

ALSA

The ALSA developers under GPLv2

Berklee

http://wiki.laptop.org/go/Sound_samples#OLPC_Samples_from_31_Music_Synthesis_Alumni_from_Berklee

Attribution 3.0 Unported

Feather Sound Set

http://kde-look.org/content/show.php/Feather+Sound+Set?content=90916

'glh Pimenta' under Artistic License

Borealis Sound Theme

http://www.kde-look.org/content/show.php?content=12584

Ivica Ico Bukvic under Creative Commons Share-Alike 3.0 Unported

ITW Sounds

http://www.kde-look.org/content/show.php/ITW+Sounds?content=98034

Ingo Wolfgarten under GPL