Look, don't take this the wrong way, but... don't use the presets in Cool Edit.
Try this: for each track in multitrack that has lots of spikes in the waveform, compress it until the worst spikes are squashed. Try these settings for a start. Ratio 3:1. Attack 20ms. Release 100 ms. Threshold -10 dB. Forget the make-up gain for now.
After each of those tracks is compressed, get the level of each track to where you like it in the mix. Then boost the overall multitrack volume level so the whole thing is playing close to 0 dB, but doesn't clip.
Mixdown the whole thing and take it into Edit View. Check how spiky the waveform is there. If there are spikes sticking up and down, then run the compressor as a limiter. Try these settings: Ratio 12:1. Attack 0 ms. Release 20 ms. Threshold -2 or -3 dB.
After that, normalize the whole thing to about 99.99%.
If, after all that, your mix still isn't loud enough, then just turn up the stereo LOL
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After that, spend a few months reading and studying and doing different mixes in Cool Edit, and then you can disregard that entire approach I outlined above. Cuz it's a preset.