How can one normalize the volume within a single track to reduce the amount of volume between the softest and loudest parts? (My use case is classical music where there are often big differences between the softest and loudest parts in a piece).
I have tried tools like the normalize in Audacity, but this does not change the dynamic range. On the the MP3Gain website, I see reference to a tool called MP3Gain Pro, which by the description, seems to do it:
"Mp3Gain PRO" does volume normalization inside the mp3, not just between separate mp3s. So if you feel a song is too quiet at the beginning (or middle, or end), then it can boost the volume just for that part.
This sounds like it would do exactly what I want, but MP3Gain Pro is not a free tool. Can anyone recommend something that will work for Windows or Linux?