Good Morning 
I just update the version 2.0.2 to the latest version 2.0.6. Since then, each opening Audacity affect my Audio balance of my Realtek card. How to make Audacity does not change my Audio balance setting.
Thank you.
Translated by Google
You don’t unfortunately. It’s a bug that occurs in Audacity when using a small minority of sound cards. What version of Windows are you using? The problem mostly occurs on Vista or later and this commit which is otherwise helpful for Vista and later seems to be the cause: https://code.google.com/p/audacity/source/detail?r=12160.
The only other thing you could try is right-click over the audacity.exe in Program Files, choose Properties, then the Compatibility tab. Try changing the Audacity compatibility to other choices. Let us know if that makes any difference.
Gale
Hello ,
Thank you for the answer. I tried all the compatibility options but that does not make a difference … My sound card is a Realtek. Any idea?
Thank you.
As I asked before, what version of Windows are you using?
Is there a reason you need to have the balance off centre, such as a hearing impediment you have in one ear?
If the sound is only balanced when set off centre it could be a good idea to go to the web site of your computer manufacturer and check if you have the latest audio drivers for your computer. There is also a chance this may help the reset problem. See http://wiki.audacityteam.org/wiki/Updating_Sound_Device_Drivers.
Gale
My version of Windows is Seven SP1. I just put the latest version of the drivers but it changes nothing. Effectively so that the sound is centered I have to shift the balance. It has always been like that. but is not the problem. This raises worries me is that Audacity change this setting …
Best Regards
Translated by Google.
I would argue it should not be like that. The sound should be placed in centre when the balance is on zero.
I will make a bug report when I have time, but there is nothing you can do about it for now unless you are able to try compiling Audacity with https://code.google.com/p/audacity/source/detail?r=12160 reverted. Even if that works it may cause other problems such as preventing the Audacity volume sliders controlling the sound device.
Alternatively, go back to Audacity 2.0.2 https://code.google.com/p/audacity/downloads/detail?name=audacity-win-2.0.2.exe.
Gale
Thank you for the time spent to answer me. I handed 2.0.2 and I am looking for information Audacity 2.0.3 does not change my sound settings
Thank you .
Translated by Google
Reports by others affected by this suggest the problem started in 2.0.3 (that would be consistent with the r12160 commit being something to do with it).
So unless you want to experiment, I suggest you stay with 2.0.2.
Gale
Hello,
I just tested the latest version 2.1.2 and am very disappointed. The bug of the Audio balance is always present after 2 years … It is a pity … Why this has not been solved ?
Translated by Google
Audacity is a community project. It is free, open source software, primarily developed an supported by volunteers in their spare time. You’ve not fixed it in 2 years, and neither has anyone else. I can’t reproduce the problem, so I’m out, but it looks to me like a problem with the Vista/Win 7 drivers, but I doubt that Realtek will tackle the problem so late in the day,
Have you tried the Windows 7 audio troubleshooter to see if it can fix the balance being uncentred when set to centre? Look in the Windows Control Panel under Hardware and Sound and select “Troubleshoot audio playback”.
Are you sure the problem is not with your computer speakers or whatever speakers you are using?
If that does not help you might be able to use NirCmd as a solution. It has a command
setvolume [device] [left-volume] [right-volume]
that works on my machine.
Their help says:
Set the volume level of your sound device. The [device] parameter represents the device identifier. In most cases, you should use ‘0’ value for this parameter. Under Windows Vista, you should specify 0 for default playback device or 1 for default recording device.
The [left-volume] and [right-volume] parameters should contain a value between 0 (silence) and 65535 (full volume) that represents the volume level for left and right channels.
Examples:
setvolume 0 0 0
setvolume 0 32768 32768
setvolume 0 0xffff 0
So, possibly you could write an AutoHotKey script for which the trigger was running Audacity, then wait for as long as Audacity normally takes to launch, then call the above nircmd command. It is probably better than opening the physical balance control each time.
Gale