FB and a Roku

Hi! I've been doing FB for about 4 months now and I love all the workouts. I recently purchased an 8 week program but my problem is I don't have a smart tv in my gym, but I have a roku instead. Is it possible to go on my phone to the calendar, click on my workout, and have it play through my Roku? So far I cannot find the icon that would indicate it's talking to my tv out in the gym. Does this make sense?