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> When you speak of "distortion" if that existed in the original, there are some "de-clip" algorithms that are marginally successful if the wind is blowing from the right direction in slightly removing some forms of clipping, but, all-in-all, the experience I've had with these have barely been worth the effort.

Which programs have you been using for this. I've used Izotope RX, and have had dramatic results in some cases, restoring the audio enough to air on a weekly public radio music program that I produce.