Legalities? I'm surrounded by bunches of law students, I"m sure I could ask one of them, but they're scary. But really, if you're using songs from your own collection on a mixtape for someone else and not making money off it....I don't see the problem.
As for the cocept, yeah I guess I'd be game. I'm not involved in mixtape trading at all so I'll ask some dumb questions. Do people still actually trade tapes? or is the term the same, while people trade CDs? Also, I think it would be cool if we were just assigned someone random without seeing their list. Then we could get a random goodness without knowing what is on it beforehand. Kinda like a QC secret-santa dealy-o.
~~Willis