watching movie on tv using NEEK

hai,

myself pooja and my project is about to watch movie on tv using nios2 embedded evaluatiom kit with ethernet connection..i had downloaded demonstrations like MTDB_VGA_TV and MTDB_LCD_TV.Above demonstrations uses dvd player as source but i have to play movie which is to be stored on sd card else playing through ethernet..how can i modify those demonstrations for my project..if anyone knows please mail me.......