2011 Kia Soul and Bluetooth Navigation though speakers?

[Elle]

So, I just purchased a 2011 Kia Soul Sport Model. I have bluetooth and it connects like a dream, everyone I call say they can hear me great. What I don't understand is how I can get my Google Maps to stream through my speakers like the phone calls do.I have a droid razr phone. I want the music to stop playing and the navigation to speak though my speakers just like my phone calls do. Is this possiable, and if so how can I do it. I have searched high and low on google and tried so much. I need help.

Thanks