Bluetooh and Google G1

I posted this in the audio section, but I feel like that's the wrong forum for it (as its not getting any responses). If someone could either delete that thread or move it here and delete this one, I would appreciate it.

I just bought a used 2005 Prius. I tried to setup my T-Mobile/Google G1 phone and it connected just fine. The only problem is that the audio doesnt come out of the speakers...

It connects and when someone calls or when I call out it dials it from the touchscreen, the music stops but the call never makes its way back to the car.

Any ideas as to how to fix this? (The speakers play music just fine, so I know the speakers arent bad.. and the phone says its connected to a bluetooth device.. but the audio still comes out of the phone speaker)

Also, I use my G1 as a media player (Music, Podcasts) I assume that I could stream that into the bluetooth and out of the car speakers.. is that possible and if so, how do I enable that? RIght now it just plays out of the phone speakers even when connected.