Martha Hamilton has 4 audiobooks on Listento.it, narrated by 3 narrators. The most-rated is How and Why Stories.

During a long drought in Australia, Tree Kangaroo and Koala grow thirsty for water. When Tree Kangaroo remembers how he and his mother survived a similar drought by digging a hole for water, their problems seem to be solved. Koala creates excuses to rest and be lazy, while Tree Kangaroo works hard to dig the well. When water begins to fill the hole, Koala forgets to share and loses his tail and a friend! Illustrated by Tom Wrenn.
©2008 Martha Hamilton and Mitch Weiss (P)2008 August House Publishers, Inc.

In this story from Russia, two frog sisters learn the truth of that old saying, "It ain't over 'til it's over" - or, "The opera isn't over until the fat frog sinks." Martha Hamilton and Mitch Weiss, the team that brought us The Hidden Feast and Noodlehead Stories, put their noodles together to bring us this delightful tale of exploration and perseverance. Illustrated by Tom Wrenn.
©2006 Martha Hamilton and Mitch Weiss (P)2006 August House Publishers, Inc.

When the barnyard animals are invited to a party by their neighbors, they dress in their Sunday best and set off for a day of merriment. But when dinnertime arrives, the famished animals are perplexed to find a simple meal of cornbread. Most of them are polite, but Rooster turns his beak up in disgust and rudely leaves the party, missing the treasures hidden for the guests. The twist ending explains why, ever since, Rooster scratches in the dirt.Martha Hamilton and Mitch Weiss capture the rhythms and idioms of the rural South, and illustrator Don Tate's whimsical acrylics serve up a regular hoedown of fun.
©2006 Martha Hamilton and Mitch Weiss (P)2006 August House Publishers, Inc.

Did you ever look carefully at a spider's webs? Did you ever wonder what causes thunder and lighting? Why do dogs chase cats? Why does it look like there's a man in the moon? In this delightful recording of tales from around the world, each story explains why an animal, plant, or natural object looks or acts the way it does. Four of these stories are told by Martha Hamilton and Mitch Weiss, authors of the companion book, How and Why Stories: World Tales Kids Can Read and Tell. Because the authors wish to inspire children to tell stories, the remainder are told by eight guest kid tellers. So listen to these stories, retell them, and then make up your own "how" and "why" stories.
©1999 Martha Hamilton and Mitch Weiss (P)2000 John Kirk; 2000 August House Publishers, Inc.; 16 9