The only version of TMT5 I have ever got to work was version 5.0.1.114. And even that version had issues with me.

About 3 months ago I gave up on TMT5 and moved to Power DVD 12. It worked perfectly for me. Most of my collection are BD.

I have a server running WHS V1 and 3 other clients, all with different configurations as far as hardware is concerned. I have been a MM user and Big Fan for about 2 years and consider myself an advanced computer user and builder. I can't begin to tell you the frustration of getting movies to play without studdering, skipping, or not even playing at all using TMT5. It was the single biggest issue I had, and from perusing the forums it seems to be an issue for a lot of folks.

Enter Version 5.3.1.144. All I can say is that it's about damn time! For me at least it seems that for the very first time in 2 years all my clients work like they should have when I spent nearly $100 on TMT5. I uninstalled my old version and did a clean install of the new version BTW. I used the full installer from the links below. I hope this helps some of you folks out there.

Here is the info copied from the ArcSoft sight.

NEW FEATURES
01. Media Center plug-in now skips main screen when entering from or exiting to a library
02. Support NVIDIA Kepler
03. Support AMD Trinity and Southern Islands
04. Support Intel Ivybridge

BUG FIXES
01. Fix seek issue
02. Fix a compatability issue with recent AMD drivers
03. Improve AMD 24hz support on some platforms
04. Fix HD bitstreaming support on AMD 7xxx platform when using non-PAP media
05. Fix lost connection issue on Intel SNB/IVB platforms
06. Fix mouse solution popup appearing incorrectly
07. Fix memory leak issue
08. Optimize SimHD performance
09. Fix OpenCL SimHD on Intel IVB platform
10. Fix headphone no audio issue
11. Fix numerous disk navigation issues that prevented playback (Apocalypse Now, Tintin, etc)
12. Fix no sound after FF
13. Fix crash/performance issues with quickly repeated button presses on MCE remote
14. Support disabling subs on MKV
15. Fix issue with lost audio after transitioning between two TrueHD tracks
16. Fix issue with incorrect submenu display

KNOWN ISSUES
01. NV Kepler HD audio bitstreaming
02. AMD 7xxx bitstreaming on some platforms
03. Patton blu-ray issue
04. AMD 7xxx DXVA SimHD picture quality (AMD driver issue)
Download link:

Full installer:
http://www.arcsoft.com/downloads/tbyb/totalmediatheatre5_retail_tbyb_all.exe

Patch from 5.2.1.119 or later:
http://download.arcsoft.com/downloads/digitaltheatre/arcsoft/totalmediatheatre_5.2.1.119_5.3.1.144_update_all.exe

Users of 5.1 or earlier will need to go through the process of getting a TMT 5.2+ Activation Code from this page:

http://www.arcsoft.com/support/free_upgrade.asp

Which version of My Movies are you using?

Ok.

And the media that is not playing is in which format?

Thanks for the heads up. Just updated TMT using the patch as I was already on 5.2.1.120. Tested a dozen times or so and wasn't able to break things. Seems pretty solid to me. Once queueing up an online Blu-ray title (BDMV) hitting backspace is taking me back to the page I had come from within MM for WMC. Takes a while to get there, but it's working without issue each and every time. Screen flashes a couple times, then I see my desktop, a few seconds later WMC pops back up displaying the page I had come from within MM for WMC. In my case I'm running MM 4.03 PR3 on Windows 7 Professional 64-bit.