Udayana
I tried the second link but did not hear words which seemed to indicate an interview with Sean Carroll by Adam Rutherford and I just wondered whether you could tell me, please, whether the interview is audio or text and is it on that page or not? No rush for answer.
Both links are to program episodes - but they don't play automatically - when displayed in a browser there should be a large "play" button to click to actually hear the broadcast.
There are other links to the podcasts, but there again you normally have to click play to hear them, or "download" to download an audio file.
The first link is to the Inside Science episode which has an extended interview between Adam and Sean Carroll at the end.
The second is to an interview by Jim Al-Khalili where Caroll talks about his career and work - definitely worth listening to imo.
HH may be right about needing to be registered with a BBC account, as they keep changing things because of the fuss about licenses.