say what? the rm command is to remove files (and folders), not applications you could at least google it before you type it in blindly. as to remove mupen64... gain root privileges by entering Code: #devel-su rootpassword (usually rootme) then type Code: #apt-get remove mupen64plus-audio-sdl
#devel-su rootpassword (usually rootme)
#apt-get remove mupen64plus-audio-sdl