I did think the audio lectures were valuable, especially in CP. I studied from the Osler notes for BB, MIcro, and Heme in conjunction with the audio, and I think it helped me. That's pretty much all the BB I knew, it helped me focus for Micro, and there were some Heme things that I didn't quite understand and it helped clarify. I would recommend them.
I probably listened to some of the AP lectures (soft tissue, renal, endocrine, can't remember any more) and it helped focus studying, but I probably listened only once through, and on a commute (long one in residency) or at the gym.