I stream movies from my MacBookPro to my Apple TV. After I set up my HomePod today, I couldn't get sound on the HomePod. After speaking with Apple customer support, I found out the way to do it - not exactly easy. Bring up movie on Mac Airplay (using airplay icon) to ATV Using Sound icon on menu, use output HomePod Doing step 3 before 2 doesn't work. It seems to me that if you Airplay from the Mac to the ATV, if the ATV output is set to HomePod, it should just go there. Step 3 shouldn't be necessary. I'm sure they'll fix this is further iterations of iOS. Right?