Audible download on itunes

Hello, this is my first post and there is a lot of great information here. I want to apologize if this has been covered before, i could not find it in a search.
Ok here is the deal. I purchased Lee Child's Running Blind from audible. The file downloaded to my computer and into itunes without any problems.
My problem is that i would like to move this file out of the audiobook section and into my music so that it can added to my external hard drive with the rest of my audio books.
In itunes it is in its own seperate area not with any of my other books in my external hard drive. It seems to be encrypted so that i can not play it with nero or real player, or share it.
I would like to do whatever needs to be done with it so that it can just be another book in my library. I have close to 400 audiobooks and I am frustrated that this book stands alone.
Thanks in advance for any helpfull information to my problem.

Sean