Fading in a .wav file?

Hal
2007-06-03T19:27:04Z

Greetings: I have a 3 minute .wav file that "bumps" in, so wanted to
"soften" or fade in the beginning, making a copy..

How would you do that aside from transferring to analogue?? The file
is "standard" 41000 stereo.. TIA..

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Hal GNU/Linux - Slackware 10.2, 2.4.31
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