While not as comprehensive as Pennington's New Testament Greek Vocabulary, Mounce has a mastery and confidence wholly lacking in Pennington. Still the caveat remains; Zondervan pronunciation borders on inept and neglects to follow its own set rules. Omicron should be pronounced as in obey; consonantal iota should be pronounced as in onion. Other than that this cd serves its purpose. I would suggest Metzger's Lexical Aids for Students of New Testament Greek over Mounce. Just buy a pack of index cards for a dollar and save the trouble.