La BBC propose des cours d’anglais gratuits avec des PDF et des audios. Cherchez la section "Basic Vocabulary" et "Pronunciation". Ce n’est pas Michel Thomas, mais la qualité est professionnelle.
Through the instructional method, the teacher takes on full responsibility for your understanding, and therefore your remembering, Michel Thomas English Beginner Easy CD 1 Track 01
The primary goal of the Michel Thomas method is to place the responsibility for learning entirely on the teacher.
This guide will explain what you are looking for, the legal/quality risks of "free" downloads, and the best legitimate alternatives to access the material.