Windows Media Player Playback

yeah thank you all the guys for suppourting.After 2 weeks of this nonsense error what i have done i that i have turned wmp feature off from add/remove programs and after restarting installed jetaudio player which played the files successfully.wmp didn't played anything till its END.
before that i tried jetaudio in presence of wmp but then it also refused to play any file.But now its playing good.
Although i haven't tried that conversion method yet which seems a reasonable method.
So now jetaudio (also plays all files) is working good for me and wmp is like vanished from windows.
But please when someone finds a true solution to this then please post here.
Thank you everyone.

this method is like a solution when you have all options gone. I have done it because i couldn't play any file on my system for almost 3 weeks.Thats pretty bad situation man.
So that is like a necessary step.
Anyone who finds the real solution is welcomed to post it here.
Thank you.

Guys Guys Guys The Problem Persists.
Unfortunately Jetaudio is also not working after 12 hours.
This has got more serious now so please i need your help to solve it.
I have also tried the format factory conversion method but its not working.
Help Needed.

unfortunately it also didn't help also, Whs.
Can i uninstall that DRM windows update that causes this problem ?
Help.

I have uninstalled all the updates of my system.Its easy.Check this.
How to Uninstall All Windows Updates: 7 Steps (with Pictures)
Because as far as i think that problem came in my life because as i remember i few weeks back i installed an update from windows update named "Digital Rights Management for media".I think that is the real cause of that error (i have seen its detailed description also).
Now after uninstalling all updates and using Tunebite 8 platinum i have De-DRM allmost all the files on my system.
Now everything seems to work good.windows media player is playing all files.
I pray it proves to be a permanent solution.Ameen.
I will report performance again.

i couldn't find that specific update on my system so i removed all of them.

Guys the method of deleting all updates (in order to delete a DRM related update) also didn't worked.
i spent next 1 whole day doing a fresh windows and all related softwares and drivers but i came to know that the problem was still there so after being dishearten when i still researched on it on net (i have copied all the music content from my second laptop) i found that it was all due to that my WINDOWS AUDIO PLAYBACK SERVICE keeps shutting down without any notice and it shows status "Started" in windows services.
So whenever i refresh that service everything becomes good.
But it doesn't remain started always.
Also the Multimedia Scheduler service in On and RPC endpoint mapper in On but RPC locator service is not running.
Guys please suggest a solid solution for this problem to Make Windows Audio always working.
Thank You.