Sample Manager is the quintessential batch audio file processor for Mac OS X. Designed in Cocoa from the ground up, Sample Manager proudly takes advantage of CoreAudio, Quartz, and other solid OS X features.
Sample Manager is hands-down the most powerful and full-featured audio batch processor available today - sort files by any parameter, view detailed waveforms down to the sample, change file names, gain, fade, trim and process to your heart's content.
Sample Manager goes beyond the call of duty by including unlimited undo, support for all known audio metadata, a hierarchical file listing with support for folders, custom groups, and even Smart Folders (which consistently search for audio files using Spotlight) and much more; all of this within an extremely well-designed and friendly interface.