Default [Q] How Do I Stop Music from AutoPlaying when I connect to my cars Bluetooth?

I can deal with most of the early quirks of my phone, but this one kills me and I can't find a setting anywhere.

When I get in my car, my phone auto syncs phone/media audio through the cars Bluetooth. And it also, auto-starts playing my mp3 files. I really wish it wouldn't do that, anyone got some advice?

This is my first Sense phone, so is there a place I just haven't looked or is this one of the many "Sense developers know me better than I know myself" type of "feature"?
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