XPS 13 Bluetooth AV receiver issue

Dear all,

I am puzzled... I got a brand new Yamaha RX V381 AV Receiver and I'm trying to play music through my laptop on it... but I cannot.

This AV receiver has a bluetooth option in it, my iPhone connects and plays music without any issues, my DELL XPS connects and I can see Yamaha device connected in the bluetooth settings, but when I play music  from WMP or any other music players, it plays sound through build-in speakers. 

I tried using this forum to set the Yamaha device as my default speaker device, but I cannot as I don't seem to have the option to do so.

Link to Yamaha receiver:

usa.yamaha.com/.../

Can you help me with this issue or suggest other option to send sound through the receiver? Not sure which cable connection I can use either?

Thanks :)