1. On the Apple Speakers, cut the speakers off of the little round pendant Y thing. So now you should just have the two speakers with a good length of thin cable.
2. Cut and strip the ends of the wires. You can get rid of the thick shield ground that surrounds the inner wire. You don't need it.
3. You can use any male 1/8" adapter with a stereo tip. (this has 2 rings around it) I used a white 1/8" cable from monoprice.com. Obviously strip the cable down.
Speaker 1 Brown - Left Signal + Solder to: White Wire (Sometimes Black) - 1/8" Jack
Speaker 1 Yellow - Combine with White -
Shield Ground (Bare Copper) - 1/8" Jack
Speaker 2 White - Combine with Yellow -
Speaker 2 Blue - Right Signal + Red Wire - 1/8" Jack
4. The most important thing is just that you connect the corresponding wires. Like if you are looking at the wires as they connect to the actual driver inside the speaker just say "Left connection is signal" and use that same corresponding wire on the other speaker. That way your signal won't be out of phase. Pretty simple hookup.
5. I was a little bummed about lack of volume. An external amp of some kind is probably best. These speakers would be best for an environment such as a reasonably quiet office or bedroom.
6. From what I've found on the web each speaker is rated for 10w at 4ohm each.
Overall I still feel these speakers give a solid overall impression of the audio source. Very pleasant to listen to. Again, maybe too quiet for most sans power amp of some kind, but hey they look cool! Nice little hour long project.