You can relisten to a previously finished blink by following these steps:
1. Tap on 'My Library'.
2. Tap on 'Finished'.
3. Tap on the finished Blink you would like to listen to again.
4. From the 'Final summary' page, swipe back through the previous blinks.
4. When you get back to the first page you can tap on 'Play Blinks' to start the audio again.