Paste a YouTube link into settings and it will play here on repeat.
The video uses YouTube’s own controls: tap it for play/pause, volume, CC (captions) and ⚙ (quality, speed, subtitle language). It starts muted; tap the speaker to turn sound on. Sound plays through your Echo once the tablet is paired with it over Bluetooth (say “Alexa, pair”).
Changes save as you make them. Links and passcodes are stored only on this tablet.