From the product page:
Remember back in the days before digital music players and MP3s? If you do, then you probably made compilations of all your favourite music, to share with your friends and loved ones, on good old fashioned blank cassette tapes. If you miss making mix tapes this product will inspire you again! Home taping never killed music!
The Mix Tape USB is due end of September. No idea what it will cost yet.
Link via Gizmodo