WavTrim is useful:

• When you extract a track from an Audio-CD (CD ripping).
• Before making MP3s (MP3 encoding).
• Before making Audio-CDs (CD burning).

WavTrim was originally created because Audio-CD song extraction is not very accurate (you easily get a little bit of the end of the previous track, or of the beginning of the next track). It is possible to trim each track by hand (using a regular WAV editor software), but that's tedious.

So WavTrim first purpose was to scan and clean WAV files, removing silence and any left over of another track. But WavTrim grew up as a multi-purpose WAV cleaner:

• It can normalize the volume (i.e. changes the volume to use full 16-bits dynamic - that can help to get tracks from different sources sound similar).
• It can batch-process several WAV files at once.
• and more...