On my 13 I plugged a Bluetooth receiver into the Aux cable. I paired it to my phone and stream Pandora constantly. To control my tracks I bought this Bluetooth remote that had worked really well.
It comes with a coup on mount to hold it in your bars. Slides on and if easily.
Satechi Bluetooth Button Series (Media Button) for iPhone X/8 Plus/8/7 Plus/7/6 Plus/6/, iPad Pro/Air 2/Air/Mini/3/2/1, Samsung Galaxy S8/S7/S6, Note 4/Edge/Pro/Tab Pro, Google Nexus 9 and more
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You can't not control tracks through a Aux cable for any device.
Bluetooth receivers need a power source. Some have a built in battery and others need a constant source. The one on my 13 needs constant power but that is easy on a Vision as I have a plug in the same box as my Aux cable.
If you were able to find a iPod connection you can swap it with the Aux cable and go this route. They're hard to find though.
On my 08 I have the 30pin plug. For that one I bought a Coolstream receiver that gets it's power from the plug itself making things a bit easier. Coolstream has a base model and a Pro model. I have the base model so I can't control tracks through my bikes controls. The Pro allows this.
This is the Pro, it's $80. The regular one is $30.
Bluetooth Adapter for Audi and Volkswagen iPod iPhone AMI Cable - CoolStream CarPro
Amazon.com: Bluetooth Adapter for Audi and Volkswagen iPod iPhone AMI Cable - CoolStream CarPro: Electronics