Maybe you have to find drivers from Klipsch??

I don't own Apple Pro Speakers, so I couldn't tell you.

400 MHz iMac DV/SE, 120 GB total (with external HDs), 256 MB RAM
600 MHz iMac DV/SE, 80 GB total 384 MB RAM
2 GHz MacBook 13", 80 GB total 2 GB RAM
iPod Photo, 30 GB
iPod Video, 80 GB
iPod Nano, 2 GB
AirPort Extreme with DSL broadband