Comment # 17 on bug 900863 from Dominique Leuenberger

Ok, there is something utterly wrong:

If I get gnome-control-center binaries from GNOME:Factory, then the .desktop
file for gnome-sound-panel is properly translated.
If I get the one for openSUSE:Factory or openSUSE:13.2, it is not.

Happy chasing I would say.