.607 and Bluetooth issue - please help

I like to listen to podcasts and music through my car's stereo system. I have an auxiliary input in my car that plugs directly into the headset output jack on my Storm2.

With the previous OS (.320), I could listen to my podcasts or music and still use my Blackberry VM605 Bluetooth Visor Mount handsfree device to make calls using the voice commands.

Now, if my Storm is plugged in through the headset output to my car, the Bluetooth device cannot call up the voice command app. Nothing happens when I press the button to make a call. If I unplug the headset jack from the car, then the VM605 works as it should and allows me to make voice dialed calls.

I tried to re-pair the device.

Anyone know if there is a way to fix this (without going back to .320)?

Thanks.