UMG seems to think that the "promotional use only" label somehow gives it "eternal ownership" over the CD. While this might make sense to a goblin living in Harry Potter's world, it's not the law under the Copyright Act. According to the first sale doctrine, once a copyright owner has parted with ownership of a CD, book, or DVD, whether by sale, gift, or other disposition, they may not control further dispositions of that particular copy (including throwing it away). It's thanks to the first sale doctrine that libraries can lend books, video rental stores can rent DVDs, and you can give a CD to a friend for their birthday. It's also the reason you can throw away any CD that you own.