If you are using ripping audiobook CDs to MP3 or AAC format prior to converting them to audiobook format using Audiobook Wizard, here's the recommended settings and why.
Do not be tempted to use "Spoken Podcast" as the resulting quality may cause problems after Audiobook Wizard up convert to 128 kbps during the conversion process. You may choose to use "error correction" but the result is hardly worth the trouble. Remember you can and should delete the ripped MP3 or AAC files from your iTunes library after you've converted them to a single audiobook using Audiobook Wizard. The extra disk space needed for a high quality rip will be reclaimed so do not hesitate to use high quality settings to get best result from Audiobook Wizard.