Streaming Audio/Bluetooth help

Hello,
I am a 1 week owner of the HTC hero coming from the flip phone era.  I have tried for several hours on the phone to get a question answered by Sprint and HTC with no success.  I thought maybe a post here would help me.  So my problem is that when I am streaming audio on my phone (i.e. Pandora / Sirius) and connecting it to my car sterio via. auxillary to auxillary cord it sounds great in my car.  When I turn my bluetooth on in the phone it takes the sound from the auxillary and sends it through my bluetooth and that sounds like crap in my car.  It seems like it is playing at an accelerated rate which makes listening to music not enjoyable.  I was told by HTC that there is no option for this setting in Firmware 2.1 but in 2.2 it has this option.  Can someone tell me if they are correct and that a 2.2 will be able to control this? Or is there a way on the Hero to accomplish this.  Thanks for any help.