Zen DiPietro has 2 audiobooks on Listento.it, narrated by 2 narrators. The most-rated is Facing Fortune.

An Earth-like world of high-tech humans faces the reality that their world is not as safe as they thought it was. Five people are thrown together to quietly get to the bottom of an unfathomable event that must stay quiet. If the population of Terath becomes aware of the truth, it will spark a civil war. That war would pit the majority of the population against the powerful minority with the ability to harness and manipulate mana. The resulting cataclysm would decimate the population and tear apart the foundation of society. The five people chosen for this must reconsider everything they thought they knew about mana, even as they learn to trust one another's abilities. They must embrace everything they never wanted in order to prevent the devastation of their world. One of them will be forever changed. Love will be denied, badassery will be unleashed, and Terath will never be the same. Even success comes at a price.
©2015 Soul Mate Publishing (P)2016 Zen DiPietro

A new manahi. A new military. A famous bard who suddenly resurfaces after a decade of hiding. A lot of changes have taken place on Terath, and an ecological crisis has raised tensions to the breaking point. Kassimeigh and Arc must work with Luc and the scientists in the Capital to determine whether the discovery is a threat to the planet. Each discovery unspools more questions, as they question the nature of mana and what it means to Terath. At the same time, they must try to calm an increasingly nervous population. Will and Izzy offer their help in that regard, but the newly-formed Guard has never been called into action before. Meanwhile, Kassimeigh must deal with a shocking change in her own circumstances, which forces her to rethink her place in the world. Life, death, mana, and chaos rival one another for supremacy. How can Kassimeigh help protect the world when she has no idea where she belongs in it?
©2015 Zen DiPietro (P)2017 Zen DiPietro