I read an interview once, where some people from here went over and interviewed the FIP people.  Turns out (at least back then) that the presenters do six hour slots, but they rotate through the week, so if I was a presenter I might have the 1200-1800 slot one day and then the 2200-0400 slot another.  "If you listen carefully," said the interviewer, "you can hear the different tastes and styles."

They have a HUGE musical collection, wrote the interviewer, which all presenters can pick from (and add to, I presume.)

Don't fight forces, use them R. Buckminster Fuller.