If you have one of these remotes to get most of the buttons working you will need to do the following
Log into a terminal session on your XBMC machine
issue the following command
touch .xsessionrc and press enter
then nano .xsessionrc
and copy the following lines into it
xmodmap -display :0 -e “keycode 127 = space”
xmodmap -display :0 -e “keycode 166 = Escape”
xmodmap -display :0 -e “keycode 175 = c”
xmodmap -display :0 -e “keycode 150 = s”
Then ctrl X to exit and save
What this does is remaps the pause button on the Emprex to space, the back button to escape, the power button to S and the record button to C (open context menu).