Faust: I'm not 100% sure, but I don't think he needs to license it. I'm no expert on the subject, but I think where he is using the sample for non-profit ie. the mixtape isn't being distributed for sale, its just a free download on the internet I think he might be allowed to use it. I think you can clear samples for use as long as it's not for profit.
I didn't think people would like the song, I just wanted to point out some CT stuff to some other fans