I recently re-downloaded some music files that i'd like to re-place on my ipod (better quality). Whenever i start the transfer queue it says that it failed to write from computer file location to ipod. This is the first time i've had any trouble with Amarok. please help!!

Have you tried deleting the music on your iPod before trying to put the new files onto it? I've never run into this problem, but I would try that first.