I've tried to edit the configuration file in ~/.config/openbox/lxde-rc.xml however the changes don't take effect, i still can't use the keys.

The LXDE wiki shows that after finding that my keyboard sends the correct standardized keyboard events i should go and edit the file to my liking, the keyboard does send the correct events and the keys are properly identified yet nothing happens.

Since LXDE doesn't come with a sound preferences option i have installed xfce4-mixer. I too have a netbook running Lubuntu and it's media keys are working fine, i don't know if what i installed has had something to do here?.

I also installed xfce4-volumed volume keys daemon from synaptic but to no avail, still nothing.

How can i make the multimedia keys of my keyboard work in LXDE with xfce4-mixer

Edit: Here is my lxde-rc.xml file