I got my iPhone 3GS connected via HandsfreeLink to get calls... works great.

However, for times when my daughter plays games or when I use TomTom, I'd like the audio to come through the iPhone and not through bluetooth audio from the car's speakers.

Is it possible to disable the bluetooth audio but keep the bluetooth handsfree functionality for calls?

 

Solved. got the Bluetooth Profile Selector application from Cydia that allows me to turn off A2DP. Now I can listen to MP3 cd, and have navigation both on at the same time. I can also use the HandsfreeLink for calls.