So it is. :)
Here's the current (version 2.5) list of Creative Commons options. They are less numerous and better named than I remember the previous set (2.0?) being, but I could be wrong.
I've talked Tyreth into tentatively letting me select the BY-NC-SA license. That's the one I would want for my own stuff, anyway, and we should probably use the same one for all FO audio.
(This is still subject to final approval from the great and mighty Tyrethosaurus Hex, who was initially keen on the BY-SA one. Also, a while back I probably would've wanted the BY-NC-ND one for myself, but my enlightened world view and Gui's audio prowess have changed my mind. :)
Please post any thoughts or objections in this thread.