I’m sure there’s an easy answer to this, but I can’t find one: How do I play the Idagio app (downloaded on my android phone) on my Samsung Smart TV, which is connected to my receiver via HDMI arc? Samsung tells me the TV is chromecast enabled (whatever that means). Do I need a Chromecast stick/dongle? Do I need a mirroring app? Since I’m pretty tech illiterate, step-by-step instructions would be much appreciated. Thanks.