The Zoomify Command-Line Converter enables scripted conversion.
The Zoomify Command-Line Converter 1.0 : Main window

Alternative downloads

Cakebrew
FREE
rating

Facilitates installing command line tools using Homebrew.

TunesKit Music Converter
rating

Download and convert encrypted Spotify songs for off-line playback.

Aqua Command-Line Tools
rating

Provides point-and-click user interfaces for controlling the command-line tools