How to get play/pause button on white bt-keyboard?

As you know, the new alu wireless keyboards feature a rwd, play/pause and fwd button on the keys F7, F8 and F9.

Since I have the previous version, the white fullsize bt-keyboard, I was wondering if it is possible to somehow map these features so that they work with my keyboard?

It's really neat to be able to pause music or film in whatever application you've got active, Spotify, iTunes, VLC and so on..