Well that was nice, not easy but not hard, really enjoyed it, sweating like a beast from the swamp but it's good sweat.
Did 2.5 miles (3.2km) and listened to the podcast for the first time, enjoyed the last tune "this is easy" I think it was called, the beat matched my stride. I discovered that the app is identical to the podcast without the music so anybody wanting their own music it's not a problem run the app in the background.