They are older translations, but here are some free audio books of the Poetic & Prose Edda on Librivox. There are also some Sagas on there as well if you search around.

**__Some Free Sources for the Poetic (aka Elder) & Prose (aka Younger) Eddas:__**

Poetic Eddas - Bellows Translation: https://www.sacred-texts.com/neu/poe/poe.pdf

Prose Eddas - Brodeur Translation: https://www.sacred-texts.com/neu/pre/index.htm

**Librivox Audio Books (free, also available via mobile app): **

Poetic & Prose together: https://librivox.org/elder-eddas-younger-eddas-by-saemund-sigfusson/

Poetic Edda: https://librivox.org/the-elder-edda-bray-translation-by-saemund-sigfusson/

Prose Eddas: https://librivox.org/the-prose-edda-by-snorri-sturleson/