That's crazy if that's happened, through a tiny little turntable needle. I'll try unplugging the turntable and see if I still pick anything up.
Your picking up the radio thru your pc somehow...
This happens with hardware when wires get crossed up sometimes, I have never heard of this happening when a program on the pc is open unless there is something connected to your soundcard that is unsheilded.
Whats weirder is that this is a southern baptist radio show , sounds like an am station, and your in England.
Not sure how thats happening,, but God sent you a message. lol.
We used to get the tv and radio all the time in our gear.