Ajahn Brahm guides a meditation for approximately thirty minutes. There is no sound at the end indicating the end of the meditation. The meditation ends at 26:45.
To find and download more Guided Meditations on Podcast, visit the BSWA teachings page: https://bswa.org/teachings/, choose the meditation you want and then type the date into the Podcast search box e.g. 01-09-2018 or try 1 September 2018.