Audio Hijack Pro--What Did I Do?

Audio Hijack Pro used to work very well, until I used it to enhance the sound on my MacBook Pro (latest Lion OSX). One day, it started distoring everything played through it. Now, when I want to just get the audio off a video of guitar and banjo lessons to play on my iPod, the recordings are terribly distorted. Recordings and playback from all sources through Audio Hijack Pro--Itunes, Safari, Quicktime, etc.--are severely distorted with high frequency noise and reverb. It's as if the Effects are on, but they are not.

I am not very familiar with audio settings, and have Soundflower 2ch as the input device (used with IShowU). I tried removing and re-installing it twice. I changed to Default Input, etc., etc.

I have no idea why this program was working and is now totally useless. I'm asking for help. Somewhere, somehow, I changed a setting or settings, and now I can't make it work. There have been a couple of Apple software updates that may have something to do with this...

Any advice I can get will be greatly appreciated.

Christine