Set whether Voicepaper's speech plays simultaneously with other apps' audio.
Set up audio mixing
On the reading list, tap the Voice button (waveform icon) at the bottom left to open Voice Settings.
In Voice Settings, tap Audio Mix.
A menu will appear. Select the option you want.
Voicepaper Only stops other apps' audio. Mix with Other Audio plays simultaneously. Mix with Reduced Other Audio plays simultaneously but lowers other apps' volume.