RIM has long had Blackberries syncing with iTunes via Apple's more official method (the XML database) for supporting 3rd-party access to your music library.
Palm can do the same. Instead they cut corners and made their customers be the guinea pigs in a (technologically clever) experiment they knew from the start was likely to fail.
All of which is fairly harmless in the end especially if you're not a Palm user. But it's a very weird choice for them to have made.
Then just ask Palm to do what RIM did, and enjoy syncing your iTunes library to your Palm hardware

The method Palm used (pretending to be an Apple device) is simply the wrong method. A clever concept, but not smart.
It avoided Palm having to write any companion software of their own, but that's what they need to do. Then that software CAN talk to your iTunes library (see also Blackberry) and you can enjoy both iTunes and your Palm Pre together.
I'm sure Palm will do that, but it's weird that they've spent so long and so much effort/money to avoid it.