Here is what I wanting to do.........

I want to pair my Nexus one to my stereo for phone calls and pair it to the dock for the navigation voice commands.

If I want to listen to music or any apps sounds on my stereo I must select Blue Tooth as the source. This in turn stops my XM radio from working. I do a lot of driving between cities were 3G is not an option so using things like Pandora really don't work that great and that is why I have XM radio.

Having the phone paired to stereo for phone calls is awesome because my stereo stops whatever it is doing and displays the incoming phone number.

So the bottom line is.....

Can I listen to the Maps Navigation on the car dock speaker and still have my phone paired to my stereo?