Acquiring the Codec’s:

1: Head over to the microsoft download site and download the Windows Embedded Standard 7 Service Pack 1 Tookit (part’s 1 to 8)
2: Once fully downloaded, run the Standard 7 SP1 Toolkit.part01.exe and extract the contents to a folder (e.g. c:toolkit)
3: Once fully extracted, browse to C:toolkitStandard 7 SP1 ToolkitDSPackagesFeaturePack (where the extract folder was c:toolkit).
4: In this folder, you will find the codec’s stored in folders beginning with “x86~winemb-premiumcodecs

5: Make a new folder in your c: drive called codecs, and copy the contents of the above folders into this new folder. The folder should appear as below:

6: Once we have the codec’s we can now integrate them using two methods, we can add them to a current machine, or add them to an installer image. Both Method’s are included below:

Online Method:

1: From a Windows Thin PC, run the following command from an administrative command prompt:

Dism.exe /Online /Add-Package /PackagePath:C:codecs /NoRestart

Integrating the Codec’s into an image:

1: Extract your ISO copy of the Windows Thin PC to c:windows_thin_pc

2: create a new folder to mount the image to, called c:mnt

3: Run the following command from an administrative command prompt:

Dism.exe /Mount-Wim /WimFile:C:Windows_Thin_PCsourcesinstall.wim /index:1 /MountDir:c:Mnt
Dism /Image:c:Mnt /Add-Package /PackagePath:c:codecs
Dism.exe /Unmount-Wim /MountDir:c:Mnt /commit

4: Once this completes, add your image back to Microsoft WDS, or write it to a usb key or DVD.

Note: if the command prompt reports DISM.exe is unavailable, grab a copy of the Microsoft WAIK.