Due to the app enabling UIBackgroundModes, which allows the end-user to play audio content while the app is running in the background, we have ensured the app contains audio for you to test this feature.
Please launch the app, go to Tab > About > Resources > Listen, select an episode, and hit the Listen/Play icon. Once you hear the audio content, lock the device, and then wake the device. Observe that the end-user can hear and control the app’s audio content from the lock screen of their device.