in reply to
(OT) Who can use freely available material?
This doesn't help you specifically I don't think... but if any of you university students get into some conundrum, your university may have free legal advice for you.
I personally got a cease and desist from a company which still hasn't done anything with their website (no, I'm not bitter...honestly, if I were really bitter, I would mention their name...they had to shut me down to defend their copyright (sigh)).
Anyway, my university gives free legal advice and I killed the site on their advice.
The point is that some of you may have other recourses than an expensive lawyer. Check into it.