We have had Jack here for a couple of months (Los Angeles), and it's working out OK. At first they did play all the listeners' complaint calls on the air. Kind of funny. But the station they replaced had about 5 records (I think they WERE records!) and three of them were Led Zeppelin.
Jack replaced the station that had two records. One was Van Halen and the other was Pink Floyd's "Dark Side of the Moon".
The posters complaining of the change obviously aren't music lovers.