I don't know too much about the CC licenses so I am not a whole lot of use here. I would assume they are probably alright to use however I really can't say for sure. I have already read a 6 page contract and about half of a US government bid document so I'm not really in the mood to work out the potential conflicts between the various CC licenses. I can try to check it out at some point but it won't be anytime soon and even then I wouldn't want to rely solely on my opinion of that. We really need someone who has worked with audio enough to be familiar with these licenses, they are the ones who this decision will affect the most anyway so it should be left up to them.
-Buck