Are you talking music radio, talk radio or both?
If you're of a mind, give satellite radio a look. They have commercial-free music of any type you can imagine; plenty of talk, both consevative and liberal; several sports stations; news; old-time radio theater and on and on. I'm listening to John Gibson's radio show on FOX News Talk (XM channel 168) right now. I have no experience with Sirius satellite radio so I can't vouch for them, but it's another option.
I've been a subscriber since January and I love it. My next investment is to buy one of those new satellite/MP3 devices that let you save your favorite songs for playback anytime. Even if you tune in when the song is almost over, it will save the entire song. They're about $400 now. I'm waiting a while for the price to drop.
You can check out XM
here if you're interested. You can listen to some of the music programming online without subscribing, I believe.