well after doing some searhcing around, i wasnt able to find any software at will do what you want. Howeve it still may be possible.
In winamp, go to preferences -> output plugins ->select the nullsoft disc writer plugin and set it and see if it will convert your music to wav or whatever witht he desired effects. I have a guess it might not work because of existing dsp plugins, but i would give it a shot.
If that does work, you can simply convert back to your original format.
And here comes the hard part, if it doesn't work. You would have to figure out a way on your soundcard, to connect the output to your line in and record the files manually. But of course you will have a loss in quality unless your card has optical out and optical in.
You could always go from your line out to another computers line and record that way if your soundcard can't handle looping into itself.