Well, the Apple pro speakers are not worth the work youd have to put in to get them to work. They are, first off, 2.0 speakers with no room for any additional speakers, nor a subwoofer; not to mention the sound the speakers produce is hardly satisfactory and skates by because of the styling and price ($59.99 is high, but lower than it could be). They require a propriety plug that only Apple uses. This plug delivers only 2.0 sound and powers the small speakers.
So, in the short and the long of it, you would have to find a way to convert them to regular stereo output (1/8"minijack) and have a separate wiring job just to power them. In all, you'll spend so much time on the project that it probably would be just better to lay down 100$ on a 5.1 set that work out of box.