You can play audio from iPod touch on wireless devices like HomePod, Apple TV, AirPlay 2-enabled smart TVs, and Bluetooth headphones and speakers.
On your iPod touch, open an audio app, such as Podcasts
Note: If your AirPlay 2-enabled devices don’t appear in the list of playback destinations, make sure they’re on the same Wi-Fi network. With a Bluetooth device, the playback destination returns to iPod touch if you move the device out of Bluetooth range.
To select the playback destination, you can also tap Play audio from iPod touch on Mac