The switch to a new website platform lead to a new address for my iTunes podcast. It took a couple of days to sort it out but if you've been missing it you can now find it here.
It's also available on Google Play.
Thanks for your patience.
The audio-only file is available here: [podcast title="Ask the Professor, May 8"]http://www.thejohnrobson.com/podcast/John2017/May/ATP20170508.mp3[/podcast]
The audio-only version is available here: [podcast title="Ask the Professor, May 2, 2017"]http://www.thejohnrobson.com/podcast/John2017/May/ATP20170502.mp3[/podcast]