MP3 sounds better?

From the NY Times “Year in Ideas”:

In February, a music professor at Stanford, Jonathan Berger, revealed that he has found evidence that younger listeners have come to prefer lo-fi versions of rock songs to hi-fi ones. For six years, Berger played different versions of the same rock songs to his students and asked them to say which ones they liked best. Each year, more students said that they liked what they heard from MP3s better than what came from CDs. To a new generation of iPod listeners, rock music is supposed to sound lo-fi. Good enough is now better than great.