Play a podcast on the Snipd app on your iPhone or iPad, then control which device it's playing from Control Center:
Open Control Center on your iPhone or on your iPad:
On iPhone X or later or iPad with iPadOS or later, swipe down from the upper-right corner of the screen.
On iPhone 8 or earlier or iOS 11 or earlier, swipe up from the bottom edge of the screen.
Touch and hold the group of controls in the upper-right corner, then tap AirPlay .
Tap each speaker or TV that you want to play the current podcast to.
Read more about audio casting with Airplay here.