Last year I did a talk in London on auditory hallucinations, The Beach Boys and the psychology and neuroscience of hallucinated voices, and I’ve just discovered the audio is available online.
It was part of the Pint of Science festival where they got scientists to talk about their area of research in the pub, which is exactly what I did.
The audio is hosted on SoundCloud which gives you an online stream but there’s no mp3 download facility. However, if you type the page URL into the AnythingToMP3 service it’ll present you with you an mp3 to download.
It was a fun talk, so do enjoy listening.
UPDATE: The nice folks at Pint of Science have made the mp3 downloadable directly from the SoundCloud page so no second website trickery needed.
Link to audio of Vaughan’s talk on hallucinated voices.
Mind Hacks 
wow, that talk was so fascinating, I never thought I would ever be interested in Psychology but it won me over!