I'm picking up my new Volvo on Thursday, the headunit will read up to 60000 files off a USB HDD but only 500 folders, I've tried MediaMonkey and WinAmp to synch the HDD to my MP3 library but both create huge numbers of folders. I've been told an iTunes library is the way to go, never having used iTunes I can't see how exactly to get my library currently J:\MP3\ to the HDD via iTunes.

How do I do this?