Say what? Yeah, the cassette tape is back in a big way, thanks to Sony, who just unveiled a cassette tape that can hold 64,750,000 songs (that's approximately 185 terabytes of data for those of you at home trying to do the math). No word on when it will be available for purchase, and of course no one has that many songs so the intent of this tape was really "long-term, industrial size data back-up". But, it's still cool nonetheless. Now if they'd only bring back the Sony Walkman.