Oxford Podcasts is home to over 9000 public lectures, teaching material, interviews and a lot more. Content is regularly added to the site including public lectures covering the environmental and scientific challenges of the 21st century.
It’s not all audio though, they also have video and written content too. You can download the complete First Folio of William Shakespeare, with its original spelling from 1623, this includes The Tempest and A Midsommer Nights Dreame.
You can find all that the Oxford Podcasts have to offer at their website: http://podcasts.ox.ac.uk/
By using the Series, People or Depts & Colleges tab you can narrow your search for knowledge down to your subject matter, or use the search feature to see what you can find.
If you have iTunes, you can also find it in there. Take a look at their website to find out how: https://www.ox.ac.uk/itunes-u?wssl=1