Mark Levin is on WXKS, 10-mid. I think (they run rebroadcast Rush 6-7, Jason Lewis 7-10, then
Levin I believe). At one time WTKK did run Levin, on weekends. For now Levin is I would guess locked in to 1200.
Speaking of "live", at one point WRKO ran tape delayed Sean Hannity 7-10 pm but by late 2002
they dumped him for Michael Savage. The explanation given was that in a fast changing news
situation (among other things, the D.C. sniper case was ongoing) they wanted something live
rather than tape delayed. (Sav is 6-9 ET now, 3-6 from his base in San Fran). So they had
Savage, all but one hour live and being "live" was the reason given.
http://www.talk1200.com/pages/onair/mark_levin.html
Levin was an occasional fill-in for Hannity (and did his own take on Santa during the holidays). He has some political books, but I read a non-political one he did, with memories of his dog Sprite.