I have 8GB iphone with 1.1.4v firmware...hacked and jail broken.

Want to apologize to Bluetooth team in advance for this side step...
I want to play music using my bluetooth stereo headset. I have read it is possible to do and have tried and partially gotten the music to play through by going to:
1. turn on iPod music
2. play the music
3. turn on Voice mail to activate the bluetooth headset

Unfortunately, as soon as I click on VM it starts dialing T-mobile and I can hear the music nice and clear. But it only plays for 0.5 sec. The music continues to play on the iphone speaker but I can only hear VM message center and then messages.

Cannot find anywhere to turn off auto dial for VM. Can anyone help?

Thanks, in advance,
Eric