I know you are a fan boy and all that. I get that

I am pounding the keys on my PB 1.5 at the moment, with and iPhone 3GS that no longer talk to with 10.4 installed. 10.5 will not fix the problem either, but if I installed Debian, MintPPC or ArchPPC I know with Amorak or other opensource audio players I could easily see my iphone and muck with it. The only reason I am still Apple all the way right now? Shotwell (Iphoto replacement) support for the iphone is spotty at best.
Going to opensource, i.e. linux, really might be your best bet. But that is just my 2 cents on it.