Ma Anandamayi at the samyam saptah at Rama Tirtha Mission, Dehra Dun, in 1974, 

To better read the subtitles, which are sometimes close together, one can pause the playing.
Sri Ma answers questions in Hindi, with English sub-titles. Translation and summary below by Swami Kedarnath. Original recording made in November 1974.
In this dialogue Sri Anandamayi Ma takes up topics and makes the subject clear. The topics discussed are:
1. Tridev (Brahma, Vishnu and Siva)
2. Jiva (individual self) and Jagat (the world).
3. Advaita (the doctrine of non-duality).
4. Neti-neti (the way of advaita practice)
5. Vyakta and Avyakta (expressible and inexpressible).
6. Atma-darshan (Self-realsation).
7. Sākāra - Nirākāra (God with form and without form.
8. Sarvam Khalu Idam Brahman. (Verily all this is Brahman)
9. Sampradāya. (Religious sects).
10. Name of God.
11. Granthi (Knot).
For commentary see this link: www.anandamayi.org/new/Ramtirtha.pdf