Monday October 15 2007
Posted By: Everyone knows that FireFox has no sound settings. IE has one, but it blocks only HTML sound. The only way to silence Flash is muting Windows sounds. This is not really convenient for the most of people. The solution is rather simple.. 
The solution:
- Open FireFox installation folder. The default path is “C:\Program Files\Mozilla Firefox”.
- Create an empty file in this folder with the name “msacm32.dll”. Use Notepad.
- Close all FireFox windows and open a web page with Flash sound to test it.
- If you wish to return sound back, just rename the file “msacm32.dll”.
The IE recipe is the same with only difference of the installation folder path, which is “C:\Program Files\Internet Explorer” by default.
Simple? Yes, as promised.
How it works?? Flash uses Windows DLL msacm32.dll to play sounds. A Windows application starts searching for DLL’s it its own folder. If it does not find a library nearby, it goes to the other places as a system folder (C:\WINDOWS\system32). Flash is an ActiveX control. It works in the context of browser’s process. Flash uses browser’s DLL to play sound. Placing an empty file in the FireFox folder, we prevent a browser from accessing the actual sound DLL. Therefore the sound is disabled.
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Category: FireFox | 
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There are 2 comment(s) for this article so far ;)
This works perfectly and is a great way to disable Flash sound in Mozilla Firefox. Thank you so much for sharing.
It’s very annoying when you have a flash file and you’re listing to some music at the same time and you can’t turn the flash sound off. Thank you for stopping by and your comment.