I've got a 3G and i have iTunes set up so that i manually manage music and videos.
Yesterday i was adding music just by dragging and dropping from a windows folder into iTunes.
For the most part it worked but there are some that I just cant get on.
I drag them from the folder,my iphone appears-"Sync in Progress" but still nothing.
I even added the music into the iTunes library but it still wouldnt add from there wheen i try to drag it from the music part of iTunes to the iPhone part.