The plan is to read Chapter 1: Ancestrality, in After Finitude. You should download the reading pack which contains some other articles that we'll be looking at (including Meillassoux on God and virtuality, the Collapse roundtable, as well as Caputo's syllabus which puts things in context, although the syllabus is not specifically on Meillassoux).
Finally, audio for the first half of the first lecture is HERE. The lecture really doesn't begin until about 30 minutes into it. Note where Caputo calls out Meillassoux on Husserl and phenomenology, as well as for lacking citations concerning Heidegger.