Sam,

Goldwave will do batch processing. I also did a Google search for batch processing normalize mp3 and it seems that the current version of Audacity might be able to do this too. (I haven't checked this out, though. I suggest you download it and have a look.)

I suspect that the final product might not be as good as you want, though. Normalizing will look for the highest peaked amplitude of an individual file. If the file hasn't been limited, it could well be that a single stray wave peak could overshadow the results and give outputs that are not necessarily balanced between individual files.

With the above in mind, it might be better to run the files through a limiter first off so that anomalous peaks are chopped back.

It will be interesting to read what our forum experts think about this.

Regards,
Noel


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