Nidesoft Nokia Does Anyone Knows How To Play Videos On Nokia 6800 XpressMusic?

Does anyone knows how to play videos on Nokia 6800 XpressMusic? - nidesoft nokia

I have tried to convert all video formats, but in vain. My results were:
1 to convert video to MP4 is much faster than sound.
2-for converting 3gp it works, but you know the quality is low, 3gp.
3-the only attempt was to convert useful to provide Nokia Video Converter Nidesoft 2 to "5800", but all I have is that the trial version converts only the first 3 (or 5) minutes
4-zip does not work!
5-flv work only