I went back a way and couldn't find any reference to this so I thought it was worth mentioning. The NHS has made up some free downloadable podcasts for the C25k program and after the first two weeks of using them I can say I enjoyed the music and the narrator isn't that annoying.
I love the NHS. I was thinking about taking up a programme like this to improve my running, thank you so much for sharing. Not too keen on the music though haha.