Wmp cannot play flv files after i download subtitle software

First time posting here.

I used to play all type of file such mp4,mp3,flv,wmv and etc with my wmplayer.
Recently,i download 1 software for subtitle.
After that,i cannot use my wmp to play flv files.
So,i uninstalled the subtitle software from my pc.
But still,my wmp cannot play flv files..only wmv.
Maybe i accidently uninstalled other thing also?
Now,if i want to play flv i open wmclassic..but if i use wmv file with wmclassic..the video will stutter and freeze.
I want all my audio and video file can be open in 1 player like it used to.
Can give me some advise?

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