Media keys mapping

I like to run background music (usually it is something like this on youtube) while working on my computer. When an interruption comes, it is useful to be able to stop the play and resume it back later.

Normally at my desk I have Dell KB522 keyboard that features plenty of multimedia keys. The Play/Pause button works with youtube playing in Firefox just great. Only problem was when I am working outside my desk, since my laptop does not have those keys. But it turn out there is easy way to map those media keys to something available on that keyboard using autohotkey script:

^!Space::Send       {Media_Play_Pause}
^!Left::Send        {Media_Prev}
^!Right::Send       {Media_Next}
^!NumpadMult::Send  {Volume_Mute}
^!NumpadAdd::Send   {Volume_Up}
^!NumpadSub::Send   {Volume_Down}

Following mapping is created:

Similar mapping can be done for many other keys and also those media keys can be turned into something else. Key names are listed in AHK documentation - List of Keys.