I just listened, and it's LOUD! Much louder than other feeds I normally listen to, had to turn the volume almost all the way down. There is also a low background hum and "ticking" noise that could be annoying after a while during quiet times, but that could just be a side effect of having the gain up too high.
You may try turning down the record level some, see how that does. I tried to set mine so it would sound right at my normal volume level on the computer, and so it sounded about the same as other feeds I listen to. (That way, if I have two on at once I'm not blasted by a louder one trying to hear a quieter one.) I don't use the RR software (or even Windows for that matter) so I'm not sure if there is some "standard" or some indicators to show signal levels that others use...