The Levelator is software that evens out the variations in audio levels within your podcast or other audio file. For example, so one speaker is at the same level as a second speaker. It's not a compressor, normalizer or limiter although it contains all three. It's much more than those tools, and it's much simpler to use. The UI is dirt-simple: drag-and-drop any WAV or AIFF file onto The Levelator's application window, and a few moments later you'll have a new version which just sounds better.