Cavuto is kind of a mixed bag. Con on economic policy, seems more lib/moderate on the social stuff. Greta is a lib host. Shep is center-left, hosts and anchors at times. Geraldo, host not anchor, lefty. Wiel is lefty, though I don't think she hosts anything there anymore. Many left commentators. Chris Wallace, I still can't get a read on him. Pretty even keel (I'd put Tim Russert in the same category, though he does let some center-left show through now and again). Every once in a while Bret Baier (sp?) will sub-anchor for Brit, so does Brian Wilson, who are both pretty even handed (I'd peg Bret as center-right and Brian as center-left).
And while FNC is 24/7, so is CNN, MSNBC (well, they cut off in late night), AP, Reuters, websites for NYT, WaPo and many other papers, various high popularity blogs and news aggregator sites, etc. If, and I stress if, FNC is a conservative network, they are still a relative lone voice in the wilderness of center-left TV news and commentary.
AM Radio is a local news, sports, and conservative talk medium. There have been many attempts by lib radio to make inroads and they simply haven't succeeded. They've been well funded, had high profile hosts, etc. and they still go down in flames. This is the listenership and the market for AM radio at work, and nothing else.
But, just as much as AM radio is a conservative haven, the web is demonstrably a liberal base medium. Lib politics colors much of the web and the lib blogs and aggregators are much more popular than the conservative ones (Drudge being the major exception, and even there studies have shown his linkage to be pretty even handed over the long run). HuffPo, Kos, Google News, digg, and there are many many others all are highly popular and they are either by design or through the vagaries of their user base, decidedly center-left. On the center-right side there are really only a relative handful of popular sites, and their hit rates are way below that seen on the left side.
The point? Lets call the radio and net a wash. Newspapers, there isn't even a comparison. Far and away more lib editorial pages than conservative. Writing and editorial staff at these papers are also heavily lib slanted, as every study and poll of that group has shown. If you wish to maintain the illusion that this slant doesn't make its way into their news reporting, either by story selection, story placement, or story content, then go ahead, but you'll be in the minority as polls of the American public have consistently shown that they see a clear lib-ward slant. TV: FNC vs CBS, NBC, ABC, MSNBC, CNN. Maybe some of those are even keel (I don't think so, but lets grant a couple for the sake of argument) there is still more than enough lib to go against the lone, supposedly conservative, FNC.
Maybe they are all out for money, fine, that means the money thing is a wash and non-relevant to the question of determining relative political biases between these sources.