Really?

I'm trying to make a copy of a DVD I burned, myself, years ago. Its a compilation of Band Concerts from Penquis Valley.  

I'm completely confounded that my computer is telling me I can't copy the disc, as it has encryption.  It was BURNED from this computer….  And I have no recollection of ever burning any discs with any form of encryption.

So I guess I don't get to copy it…