MKV playback is fully supported in x64 Media Center on all versions of Windows.
Concerning S/PDIF, digital, optical and HDMI: The administrator and a regular user are different users and each must setup the Audio TAB. At no time should anyone have a need to click the leftside of the Audio TAB manually; it uses system detection.
>>>> SETUP AND USAGE <<<<
quotations are from a person with vast multimedia experience.
Feb. 19, 2014 - "I'd suspect that if I put it to the test I'd find that K-Lite, for example, had done more damage (as measured by crash reports) than some notable percentage of actual outright malware."
Mar. 2, 2014 - "At one point 7 of the top 10 crashes in multimedia on Windows lead squarely to problems induced by K-Lite."
Mar. 3, 2014 - "...the fact remains that they (K-Lite) have been one of the most toxic projects ever released for Windows in any form."
The above quotations encapsulate what prompted me to produce my own codec packs.
Things the Shark pack does that other packs cannot do . . .
1. Full color thumbnails including FLV's and 10bit MKV's.
(also allows users to select at what point by percentage to grab the thumbnail)
2. Enable the Preview Pane for ALL newly enabled filetypes such as MKV and FLV.
3. Explorer properties are displayed for non native filetypes such as MKV and FLV
4. Updated often - and has update notification builtin
5. Allow use of the PowerDVD decoders for 32bit LiveTV in Media Center.
6. Support playback of MKV files on Extenders and on the Xbox One.
7. Support the use of the Play To function for MKV and FLV files.
8. Support playback of MOD audio files and M4A files containing ALAC
9. Supports playlist creation for use in Media Center
10. Allow users to Enable/Disable codecs installed on their system
11. Functionality such as Win7DSFilterTweaker builtin.
12. Support 'Add to Windows Media Player List' using rightclick on all files such as MKV.
If you decide to choose the x64 version of Windows Media Player as your
Windows Explorer will automatically differentiate between the 2 media players as depicted below.
The Settings Application is 100% UAC compliant.
Restricted access is enforced. (User Account Control)
The Application allows each user to maintain individual codec settings while at the same time seamlessly integrating any administrative commands directly into the users account. New users accounts are detected upon opening the Application and automatically inherit the Administrators settings.
Adding files to the Windows Media Player Playlist
On the Help TAB of the 32bit Settings Application is a button to allow you to choose Windows Media Player Filetype Associations. This buttons functionality is GLOBAL and is not restricted to the 32bit environment. Once you have used this button, you can Enqueue newly associated filetypes to the Windows Media Player Playlist as depicted below. It also sets up Media Center to utilize the associations for seamless playback in that player also. If for some reason this doesn't work for you, go back to the associations button, click No twice, consecutively, then select Yes. No reboot is required.
This will also work for audio files such as FLAC, APE or musepack.