I've been listening off and on over the last few weeks and honestly, I don't think its that great of a show. There is some good music for sure, but its interrupted too much by cut-ins from the announcer of the show, too many montages of 15 second bits of songs, all of the interviews with any of the major players of the era are all called-in over the phone sound bites, and plugs for WNEW's all-news format too regularly.
Personally, I wouldn't pay for it if I wanted it.