MacMP3Gain
MacMP3Gain
Additionally, the new "iTunes Plus" files may be corrupted by the current version of aacgain (the underlying program included in MacMP3Gain). Please make backup copies of your music library before running MacMP3Gain.
| Date | Version | Description |
| 22-Dec-2011 | 2.1 | Fixed mixed up Radio Gain Mode and Undo buttons. Fixed progress tracking. Built on Mac OS X 10.6 Snow Leopard - should run on OS X 10.7 Lion (untested). |
| 18-Aug-2011 | 2.0 | Added Undo button. |
| 31-Aug-2006 | 1.9 | Added link to Intel native version (**) from French student Maxime Hadjinlian. |
| 20-Dec-2005 | 1.9 | AAC gain and Tiger support. This version runs on Mac OS X 10.3.x and 10.4.x and handle non-protected AAC files |
| 09-Nov-2003 | 1.8 | Fixed playlist feature for iTunes 4 |
| 03-Nov-2003 | 1.7 | Updated to mp3gain 1.4.3. Changed behavior when "Allow Clipping" is unchecked to enable the "auto-clip" feature of mp3gain. |
| 28-Feb-2003 | 1.6 | Minor GUI fixes to disable "Be Nice" and "Target dB" and "Album/Radio" buttons while running. Added documentation to archives. |
| 26-Feb-2003 | 1.5 | Added "Be Nice" option care of Michael Heinz. Added "Cancel" button. |
| 23-Feb-2003 | 1.4 | Added "Target MP3 Gain Value" option. Added preferences file to save previous dialog settings. |
| 20-Feb-2003 | 1.3 | Fixed program hang when "Allow Clipping" checkbox was unchecked. |
| 18-Feb-2003 | 1.2 | Added "Process Sub-folders" option to process all folders below the selected folder. |
| 15-Feb-2003 | 1.1 | Added "Choose Playlist" button to allow selection of an iTunes playlist for processing. Also added new icon from Mark Lorrigan (thanks Mark!). |
| 16-Jan-2003 | 1.0 | Initial release. Contains mp3gain version 1.3.3. |
(**) Note: It has come to my attention that the above "Intel version" of MacMP3Gain is not fully native. The underlying program (aacgain) is still a PowerPC binary and as such, there will be little performance gain. When someone else provides me with an Intel-built version, I'll add the link here.
Copyright (C) 2003-2014 Bery Rinaldo
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Based on aacgain version 1.4.0
copyright(c) 2004 David Lasker, Altos Design, Inc.
derived from mp3gain version 1.4.6
copyright(c) 2001-2004 by Glen Sawyer
MP3Gain/AACgain web sites:
http://mp3gain.sourceforge.net/
http://altosdesign.com/aacgain/
uses mpglib http://www.mpg123.de
AAC support uses faad2 http://www.audiocoding.com
mpeg4ip's mp4v2 http://www.mpeg4ip.net
Linux build system by: Prakash Punnoor
Icon contributed by: Mark Lorrigan
"Be Nice" addition by: Michael Heinz
Glen Sawyer for all his development of MP3Gain and to David Lasker for the aacgain addition. Special thanks to Mark Lorrigan for his work on a fancy icon for MacMP3Gain. Also, thanks to Michael Heinz contribution of his "Be Nice" feature.
Mac OS X 10.2 or higher and some MP3 files. iTunes 3 or higher required for playlist support.
Double-click on the application icon. You will see the following dialog window:
Click on the Choose Folder button to select a single folder with MP3 files in it. This is typically a single album from one artist under the iTunes folder. A dialog box like the one below will allow you to choose a folder.
If you prefer to select an iTunes playlist, click on the Choose Playlist button. If iTunes is not running, it will start running (this is so that MacMP3Gain can ask it for its list of playlists). A dialog box like the one below will allow you to choose from a list of your iTunes playlists.
After selecting a folder or a playlist, simply click the Start button. While the process is running, the button changes to a Cancel button to stop the procerss. The mp3gain program takes several minutes to analyze the files, then modify the gain for each file. A status message will be shown near the bottom of the dialog box:
When the process is complete, the "barber pole" busy indicator will disappear and a message stating that the processing is complete will be shown at the bottom of the dialog box. That's it...you can choose another playlist or folder, or quit.
With this box unchecked, the gain offset is adjusted to ensure that no values go out of range (this is the so-called "auto-clip" feature of mp3gain which uses the "-k" command line switch).
Q: Why are the songs so quiet after I run mp3gain?
A: The command line program mp3gain has a default of 89dB which sounds quieter than many newly ripped MP3s from "modern" CDs. This is now adjustable with MacMP3Gain although adjusting this higher may mean that you add more clipping.
Q: I am running MacMP3Gain but I don't hear my MP3 files playing. What's wrong?
A: MacMP3Gain is not an MP3 player, it analyzes and modifies MP3 files to normalize the perceived volume level of the songs so that when you play them with an MP3 player, you don't have to adjust the volume level for each track.
Q: I am running Mac OS X 10.1, how can I run MacMP3Gain?
A: You can install the Developers Tools that came with your Mac and download the full source to MacMP3Gain (see above) and to the command line mp3gain that I built for Mac OS X 10.2 and build it all yourself. If someone does this, I'd be happy to help you and post it here once it's complete.
Q: I have used the command line version of mp3gain and it has a lot more options than MacMP3Gain. Can you add support for other options?
A: I started with the idea to keep this very simple, but I'd be more than happy to consider other options if enough interest is generated. Just e-mail me at: