Never mind the quality feel the lenght...
I have a collection of abridged books on CD at home. Each book is two 75 min disks. There is one exception, War and Peace, this uses a whole 4 disks, a grand 5 hours of speech.
I was browsing Audible trying to decide what books to get with next month subscription and I found there unabridged version, all 62 hours of it.
Might be a bit heavy for background noise while sewing.