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.