Talking Books are currently available in four-track cassette format. However, NLS is beginning a new digital download pilot project for books. <ref>https://www.nlstalkingbooks.org/dtb/</ref> | Talking Books are currently available in four-track cassette format. However, NLS is beginning a new digital download pilot project for books. <ref>https://www.nlstalkingbooks.org/dtb/</ref> |