Dave tells us the latest installment from the weird world of hearing and balance tests and we ponder a positive word beginning with X, which takes us to Xanadu, Mark's theta wave podcast gets a mention, then we're on to the world's thinnest speakers, made of carbon nanotubes, Ray Kurzweil wonders if machines can have souls - discuss, then we're on to a topic sent in from Kayle Clements about replacing band members, the nifty Optogate triggers a discussion on must have gadgets and gizmos. And finally - Oliver Davis from the Circuit Symphony sent us in a demo of work in progress to play us out.
