Hi its been bothering me a while that I cannot play music via bluetooth (especially when the missuses 63 Adam can!), the car is 15 Plate GTC SRI and has bluetooth functionality for phone calls, DAB and USB. Looking around some support it by pressing AUX twice but this doesn't work for me, am I just missing something?

What options are available to me? I've looked at aftermarket units but many don't support the ECO button or I lose some factory functionality such as DAB.
Any help would be much