I used the podcast for the first time (W2R1) today and found the music very irritating. My first time through the programme I used a stripped back app called Simple C25K, which just tells you to change pace with a bell, so I was able to listen to any podcast I fancied while running.
I was persuaded that I should use the NHS podcasts in order to get the training tips, but I'd really rather just read a transcript then run in my own way. I know, picky, picky.