When using an Apple keyboard with your Mac the function keys take on alternate purposes. For example, if you press the F8 key it will play/pause your music instead of sending the F8 signal to the application you’re using. There may be some of those function keys you’d prefer to act like the F1-12 that they do on other keyboards instead of the special functions that Apple assigns to them.
If that sounds like something you want to do go ahead and grab the FunctionFlip app. It’s a free preference pane that will let you individually toggle how each of the special keys behave. For example, if you check the box for the F7, F8, and F9 keys they will, by default, act as the F key instead of controlling your media playback. You can still access the media options by holding down the fn key to get the special function back.
Before installing FunctionFlip you should navigate to the Universal Access settings on your Mac, and check the box to Enable access for assistive devices. Without that FunctionFlip won’t be able to operate.
FunctionFlip Homepage (Mac only; Freeware)