EMI is suing ReDigi, a company that lets consumers resell their MP3s for copyright infringement. This isn’t a huge surprise, since unlike selling a used CD, a used MP3 is theoretically the same as a new one.

The New York Times has more from the complaint: “‘While ReDigi touts its service as the equivalent of a used record store, that analogy is inapplicable: used record stores do not make copies to fill their shelves,’ the complaint says. ‘ReDigi is actually a clearinghouse for copyright infringement and a business model built on widespread, unauthorized copying of sound recordings.’”

The whole concept of selling used digital content is tough. Yes, it was nice in the days of print to resell records, CDs, DVDs and books that you have already listened to or read, and to pick up used copies of other people’s old media at a cheaper price. But how do you do this with digital content? Read more