Complex sentence: The producers originally rejected him for the part due to his ubiquitous presence on so many radio dramas and the familiarity of his voice, but his impressive audition could not be dismissed, and he became the obvious choice for the role.
Split into simpler sentences: The producers originally rejected him for the part due to his ubiquitous presence on so many radio dramas and the familiarity of his voice. But his impressive audition could not be dismissed, and he became the obvious choice for the role.