I'm writing this for 2 devices I recently purchased. My device appears to not have the same issue. I'm still using walkman but have loeaded books onto new device. My book chapters are loading in sequence. My husbands are loading in random sequence. His shuffle is off ! We have been using this for library books for years with Overdrive software on Sandisk and Sony devices. When I sent email to their customer service they responded with a link to this site for a review ! They made statement in e-mail that they are always trying to improve product. oh me. I want this to work because of micro SD to provide more storage of MP3 novels. As an aside WMA takes about 1/3 of space. Overdrive eliminated WMA . The 2nd device has this eratic behavior when used and downloaded by either of us.