bluetooth adapter mmi

Hello everyone. I've been trying to play music through the multimedia port in the glovebox of my 2010 C63 since about May but haven't had any luck. I initially tried using the supplied Mercedes-Benz cables but couldn't get any signal through those. I've since purchased two bluetooth adapters...

Love to play music from my phone in my W212 estate (2012) Car has bluetooth, and connects to my smart phone to make phone calls fine. Has this connector in the centre console (see attached image). Wondering if anyone knows if either of these options would work (cable would fit).. or if there...