ive done the following when dealing with loud pops/clicks;
1. open the sound file in an audio editor.
2. the pop or click will probably be visable as a spike in the .wav file.
3. select that spike and adjust the volume to 10-50% (varies depending on the volume of the sample)
in the final sample you will notice the pop/click is almost completely gone and you cannot really detect a drop in volume in that portion of the audio sample...youll have to play with the levels of volume adjustments to get it sounding right.
hope that helps somewhat.
ONE
S1KS