Download of iTunesVolumeAdjuster 1.3 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X was originally produced by Vukodlak. The most popular version among the program users is 1.3. The software lies within Audio & Video Tools, more precisely Music Production.
From the developer:
iTunesVolumeAdjuster is a simple AppleScript application that modifies the volume of every track as you like!
This useful application allows you to further raise the volume of each track in your iTunes.
Requirements: Mac OS X 10.5 or higher
Platform: PPC / Intel
You may want to check out more Mac applications, such as M-Audio Key Rig, which might be related to iTunesVolumeAdjuster.