Goldwave - 6.54

: If you're using the trial version, it tracks your "command count." Each session allows for 200 commands , and once you hit the limit, you can simply restart the program to reset that session counter (up to a total lifetime limit of 2,500).

If you meant "a piece" as in a for using the program, here are a few essentials: GoldWave 6.54

: If you have a hundred files to convert or normalize, don't do them one by one. Use the Batch Processing tool under the File menu to apply effects and format changes to an entire folder at once. : If you're using the trial version, it