Replay Radio
I've been playing around with the current version of Replay Radio demo. The audio recordings so far from streaming URLs on my PC machine, aren't as clear as what I would get from Audio Hijack that I use on my iBook. Also, the add to my iTunes Library function hasn't worked flawlessly yet.
UPDATE: I am really NOT happy with the audio quality of Replay Radio at all. It's got this added noise in it that you usually hear with Real Media files.