iPod nanos fail to play long Audible audiobooks
Why would long (over twenty hours) Audible audiobooks play fine on an IPod shuffle but not play on IPod nano's?
After about 15 hours, the sound from my nano (6th gen, 64 GB) turns into a squeal. I downloaded a fresh copy of the book from Audible, reset my nano, and tried again. Same result. I can hear the book fine directly from my Mac. I loaded it on an IPod shuffle and have no problem. I listened to the whole book. I purchased another long (thirty hour) book from Audible, emptied my nano and loaded the new book. About 15 hours in, the same squeal returned. I went back through getting a fresh copy of the book, reset the nano, etc. Same result. Again, the book plays fine on the shuffle.
Thinking the nano was defective or broken, I purchased a new, 7th generation nano and tried again. The squeal returned at the same chapter in the book as it did on the 6th gen nano.
Both nano's have plenty of free memory as the books take up less than half the memory capacity. Both nanos are fully charged. My ITunes version is up to date.
I would appreciate any insights anyone can offer.