Ford edge music from bluetooth?

I have a ford edge with micosoft SYNC and my iphone is connected and I can use the phone part but i can't figure out a way to play music from my phone via bluetooth. I don't know how to change the input source to bluetooth, it only says line in.
Any one know?

There's an option for audio source in your iPhone's Bluetooth menu, make sure SYNC is selected and not DOCK CONNECTOR. Once then has been confirmed or changed, press the voice command button and say "BLUETOOTH AUDIO."

If you need help or have additional questions, contact our In-Vehicle Technology Team at: 800-392-FORD (prompts 1 & 3). They're available Monday through Saturday, 8:30 a.m. - 10 p.m. & Sunday, 11:30 a.m. - 10 p.m.

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Jaclyn,
In-Vehicle Technology Team