I haven't found any respectable conservative leaning news sources to listen to, other than conservatives who provide commentary on NPR or are participating in a back-and-forth discussion with liberals. That doesn't mean there aren't any, but I haven't found them, nor do I go out of my way to look for them. As with gollum, I'm more likely to read than listen.
I check out aggregate sources of news and read articles from American Conservative, National Review, American Spectator, and others if they look interesting. It can be enjoyable to read essays that aren't overly concerned with the sensitivities of doctrinaire progressives. Basically, I enjoy pieces that are written by cultural critics who may or may not be conservative, pieces on language, history, and philosophy — not partisan politics.