GPS Navigation Bluetooth Speaker? HELP!

[dodgerbulls]

So i'm first time poster longtime lurker, I'm here posting just a simple question. I'm looking to buy the t505 bluetooth speaker because I don't like driving with an earpiece. So here's my question, does the t505 lets me to listen to the GPS Navigation from the Droid? If so, how and can I play music and navigation at the same time.. or music by itself?

Thanks in advance.