1) I would appreciate it if anyone could take a quick look at the AUTHORS file in our data_extern directory and verify that his works (or works who's creator you know) are properly accredited to him (or the person that created that particular piece).
Also there are some things that caught my attention.
2) Sound
Most of the authors (except for a small portion) are in the AUTHORS file, however many of the licenses are CC by-nc-nd, which is non-commercial, is this compatible with our open source licensing?
Additionally, the first two:
audio/ambient/default/allgorythm-lift_up.ogg
audio/ambient/default/allgorythm-resonance_blaster.ogg
Apparently are from http://www.bediff.com, but i can't find them on there, nor any hints to how they're licensed so I suggest we lose them. (I'm not even sure we're currently using them)
3) Fonts
We have a lot of fonts in there, but for most of them the license is not clear. Then there are some (Blue Highway fonts) for which a license is included, but redistribution is not explicitly allowed. Only Vera Mono is a font that can be used in a way that is compatible with open source licenses but the license is not included, which it should be (it can be found here though: http://www.gnome.org/fonts/, so I'll probably add it some time soon).
Same goes for gui/fonts. Commonwealth is only licensed for non-commercial use. Deja Vu Sans and fkp.de seem to be ok, the others not so much.
That's all for now.
![Wink ;)](./images/smilies/icon_e_wink.gif)
I'm going to go through the commit history of the data_extern directory, which will probably help to find most of the (more recent) authors but I would also suggest to remove unused files of which we (after some effort) are not able to find the authors.