Recommendations for Private Pilot CDs?

I'm working on my private pilots certificate and until I get it, I'll be
doing a lot of driving - up to eight hours on the road each weekend. I can
use that time listening to what my wife calls "sports blather" on the radio
or maybe use it to help me in my flight training. The text I'm using for my
flight instruction is "Rod Machado's Private Pilot Handbook." Can anyone
recommend a CD series that will complement this text?

Thanks in advance.


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