Capstone Partners with Earplay to Develop Bestselling You Choose Adventure Books for Amazon Alexa 12 New Skills That Families Can Play on Alexa Minneapolis, MN — January 10, 2019 — Capstone, innovative publisher of children’s educational content for home and schools, has partnered with Earplay, the leading interactive audio platform, to bring the publisher’s popular, bestselling You Choose Books to Alexa-enabled devices. …