As others have said, these are great books, and my toddler loves them. I give the product a 3 star review for two reasons though:
1. There are times when the background music is too loud (as another reviewer said). With an audiobook, especially in the car, it is critically important to have the voice dominant enough to be heard clearly throughout, and that is occasionally not true here.
2. The books aren't separated or clearly delineated. If you bought the CD, you'd get each book as a separate track -- as things should be -- allowing you to find the start of a book and skip between books quickly. If you buy the Audible version, however, you're going to have to figure out that the Grinch begins at 25 minutes, 14 seconds and ends at 37 minutes, 28 seconds, etc. And you'll have to cope with the fact that there's absolutely no buffer between the books. I have just figured all these out and am using audio software to split the file up, but there's no reason I should have to do this. I can't edit the product for the rest of you, but here are the times:
The Cat in the Hat - 0:00:33 - 0:08:34
Horton Hears a Who - 0:08:35 - 0:25:13
The Grinch... - 0:25:14 - 0:37:28
Did I Ever Tell You... - 0:37:29 - 0:45:59
The Lorax - 0:46:00 - 1:01:10
Yertle... - 1:01:11 - 1:23:39
Thidwick... - 1:23:40 - 1:35:00
Horton Catches the Egg - 1:35:01 - 1:46:06
The Cat in the Hat Comes Back - 1:46:07 - 1:55:11
In sum, a great product marred a bit by technical issues. Buy the CD & rip it is the easiest way to cope, but if you buy this, I hope the above saves you some frustration.