WD My Cloud 3To VS Google Chromecast

I would like connected my cloud 3 To with a google chromecast dongle.
I not found a good issues about connected each items.
It’s in order to listen and watch multimedia folders stocked on my cloud from a phablet android where application my cloud home and my cloud OS 3 are installed.
If someone has got a solution. I can see the application my cloud home running well but not my cloud OS 3.