Inspired by the Hoerspiele ("Hear Plays") stories of his youth in Germany, Giddio founder and Top Kid Jens Hewerer is the first to launch a new concept in children's entertainment in the United States — audio adventures specifically for children on CD.

The first two audio adventures of Billy Brown were then launched in September 2006. Meant as a supplement to books and to parents reading to their children, Giddio's audio adventures offer a relatively low-technology, user-friendly format that children can listen to whenever they choose. "The episodes range between 30 – 45 minutes long, so the format is particularly good for long car rides," said Hewerer. Each episode is self contained – no cliffhangers here – and star Billy Brown and his friend Emma, who solve a puzzle or have an adventure in their hometown of Johnstown. Along the way they meet people that a young listener might see, from mail carriers and librarians to friends and neighbors.

Hewerer develops the concept and theme for each CD. He works closely with a team of voice actors, creative and production people to insure high quality production and entertainment in each Billy Brown adventure.