Default [Q]How to prevent Google Play Music scanning my local storage?

Greetings.

I am looking for a way to prevent google play scanning my local storage (phone storage) for music track. Basically I have my audio books which I listen using the audio book player, now when google scan those folders it mixes the audio book files with my actual musics and when I do a "I am feeling lucky" try playing last added, etc. It plays my audio books as well

Thanks.
Nexus 4.
Original Rom.