Windows 7: playing files in a folder by specific player

hi
my default player is windows media player.
but is there a way to play files in a specific folder by kmplayer?(only files in this folder open with km player)

Try setting it as your default player. Click start orb, default programs tab, set your default program.

thank you my friend but i do not want to set kmplayer as my default program.
i just want to play files in a specific folder by km player(without right click on it and open bye kmplayer becausethere is many files and it is boring to me)

Make a shortcut to kmplayer on the desktop/taskbar. Make a shortcut to the specific music folder on the desktop. When it pleases you, drag the folder shortcut onto the kmplayer shortcut. Voila!

If you prefer a clean desktop, then pin the parent folder of the specific music folder to the taskbar. Rt-click to open explorer/parent folder and drag music folder to kmplayer shortcut.

thank you my friends.
i have another question , when i want to open a file for exampple with km player.
right click on it and in "open with: menu if the km player was not there i should use "choose default program" and when i choose default program all file with that formatt open with kmplayer.
it is a small problem but was my old question that if i want to open a file with a program that is not listed in"open with" menu i always should use "choose default program" like picture below:

If I understand your followup question correctly, clicking on "choose default program" will present a dialog box from which a program (kmplayer) is searched for and selected to open the particular file.

On the left side of the dialog box is a tick box in which a choice can be made to associate the selected program (kmplayer) to that file's extension/format.

Leave it unticked when using kmplayer and WMP will continue to be associated with that file's format/extension.

thank you very musch gigagiggles...it worked.