"firefox"
    m:0x18 + c:53
    Alt+Mod2 + x

"gnome-terminal"
    m:0x18 + c:52
    Alt+Mod2 + w

"amixer set PCM 5+"
    m:0x10 + c:176
    XF86AudioRaiseVolume 

"amixer set PCM 5-"
    m:0x10 + c:174
    XF86AudioLowerVolume 

"amixer set PCM toggle"
    m:0x10 + c:160
    XF86AudioMute