Final answer:
The producer should consider purchasing Pro Tools and Sound Forge for their Mac OS X operating system.
Step-by-step explanation:
The audio-editing software programs that the producer should consider purchasing for their Mac OS X operating system are Pro Tools and Sound Forge. Both of these programs are widely used in the music industry and offer high-quality recordings. Audacity, on the other hand, is a popular and free audio-editing software program, but it is not specifically designed for Mac OS X and may not provide the same level of performance and features as Pro Tools and Sound Forge.