First thing is that SUNPLUS-CHIPs dont run in ADFU mode .So make them run for software you have to put that mp4 or mp5 in the camera mode and what to do next..............the following is the link where you can get the information where you can get the information.
http://www.s1-mp3-player.org/category/sunplus-chip/
and for drivers you can search on the forum or on yahoo too