I am getting stuttering when I try to copy my mp4 files off of my pc to my N810. I was wondering if maybe the Nokia converter that you mentioned may help. Where is the converter located? And do you think this may be my problem in the first place? I have converted avi files and flv files with no trouble in the past but my pre-existing mp4 files recorded off my Sanyo Xacti SD video recorder (which I could run on my pc with no trouble) will not run without severely stuttering using my N810 with either the media player or mplayer. All other video files work fine. Any help would be greatly appreciated.