Microsoft KB Archive/934872

= How to remove MP3 codecs from a Windows Embedded for Point of Service image =

Article ID: 934872

Article Last Modified on 3/28/2007

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APPLIES TO


 * Microsoft Windows Embedded for Point of Service

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INTRODUCTION
Microsoft Windows Media Player includes MP3 codecs from a third-party company (Fraunhofer IIS) in order to play back MP3 music. These codecs are included in Windows Embedded for Point of Service (WEPOS) when you build an image that contains the Windows Media Player optional component.

This article describes how an OEM can remove the MP3 codecs from a Windows Embedded for Point of Service image.



MORE INFORMATION
The following registry keys are related to the MP3 codecs that are included in Windows Media Player when you deploy a WEPOS image:
 * &quot;HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MediaPlayer\Settings\MP3Encoding&quot;
 * &quot;HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32&quot;, &quot;msacm.l3acm&quot;
 * &quot;HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\drivers.desc&quot;, &quot;C:\Windows\System32\l3codeca.acm&quot;
 * &quot;HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\drivers.desc&quot;, &quot;l3codeca.acm&quot;

The following file resources are related to the MP3 codecs that are included in Windows Media Player when you deploy a WEPOS image:
 * L3codeca.acm
 * L3codecp.acm
 * L3codecx.ax

Note These file resources are typically located in the Windows system directory ( :\Windows\System32).

How to remove the MP3 codecs
To remove the MP3 codecs from a WEPOS image, you must remove the registry keys and file resources that were mentioned previously. To do this, follow these steps:
 * 1) Click Start, click Run, type regedt32 or regedit, and then click OK.
 * 2) Search for each registry key and delete it.

Note The &quot;HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\drivers.desc&quot;, &quot;l3codeca.acm&quot; registry key may not actually exist with the latest version of MP3 codecs.
 * 1) Delete the file resources by using Windows Explorer, or by using the file management system of your choice.

Note After the MP3 codecs are removed from the target system, Windows Media Player may prompt you to install the codecs again if you try to play back MP3 music content. You should not run the installation process in this situation.

Keywords: kbhowto kbinfo KB934872

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