I am using Ubuntu 12.10, and I have been trying to use the CCSM command plugin set Alt + my directionals to do the function of my media keys. So I have set Alt+Left to run "xdotool key XF86AudioPrev"; Alt+Right to run "xdotool key XF86AudioNext"; and Alt+Up to run "xdotool key XF86AudioPlay". Alt+down is set to run "xdotool key XF86AudioMute" and for some reason it works. When I try Alt + Left, Right, or Up it does nothing. I know these key combinations were used by the switcher, and I have tried disabling and remapping the shortcuts to no avail.
Any help would be appriciated.