I happen to have Cool Edit Pro and I've had a lot of luck just starting a new recording while playing the Real Audio. I do it for my wife all the time when she comes across Tori Amos interviews. It takes a few tries to get the recording level right, but then I have a nice wav file I can do anything with (crop, normalize, etc). I've even recorded audio from DVDs this way.

Total Recorder will be easier to use, but if you have a program like Cool Edit Pro, it might be worth giving it a shot to save a few dollars.