All of my audiobooks are gone except for those purchased through Itunes...

All of my audiobooks are gone except for those purchased through iTunes since I updated the new iMusic update.

And I mean all of them on all decvices (laptop,desktop,iphone). And they are not in iBooks.

As I feel that hiding or removing content which I have purchased is essentially stealing- I would like answers ASAP.

Whay Mac can't figure out a way to stop ******* with my personal property is beyond me...