I don't want to rain on your parade here, but it sounds like anything but "very basic audio editing". That said, you can try iZotope RX, specifically the De-Clip module. It's not cheap, but you ought ...

Linux has always been a great operating system for programmers. Since the late 90s, however, there's been a big push to make Linux more attractive to people that don't have Mountain Dew addictions.