When you open Kugou Music, you can download one. Then search for the Brahma Chanting Great Compassion Mantra in it. The first one is the one you mentioned, the 12MB one is it.

Or open Kugou first and then enter kugoo://|Music|Buddhist music Buddhist chanting the Great Compassion Mantra.mp3|12627384|d6f247ee55b1ea541f517d252ecd3154|/

It will be ok