No audio with Bluetooth using Android 2.1!

When I tried using my new HTC Hero in my truck after pairing it to Bluetooth, I heard nothing through the speakers. Is this a common problem with Android phones, because my old Windows Mobile Touch Pro 2 didn't have that problem?

[The TP2 had it's own multitude of issues]

 

Subscribed. HTC desire here, hopeing it will sync w my new pioneer deck.

 

The truck did the following properly:
A) Initiated a phone call
B) Muted the stereo upon initiation
C) Displayed "Talking" when I dialed number on phone as well as B)
D) Dialed # when verbally instructed and did C and B correctly.

What it did wrong (in my short experience):
Did not indicate any sort of sound.

Computer troubleshooting is my profession so when I get a chance, I will certainly be more thorough and report back. I wanted to see if anyone else had the issue or knows of any fixes. I still would like to know if anyone has any experience with this problem/suggestions. I'll do likewise