DINOSAURS WEE SING Book paperback 62pgs 8x5" Cassette Tape & USB Flash Drive with MP3 Files Cassette Tape transferred the audio book to USB Flash Drive with MP3 Files (cassette tapes are not digital, the sound quality is not equal to digital) you do not need the cassette to listen to the audio book, just plug in the USB Flash Drive into your computer. Tracks: 51 songs or poems sound is a little muffled but very understandable audio weight 3.3+2.2oz LOVE TO BUNDLE with other items SMOKE FREE Pet Free Environment