download  install  test and skin XnViewMP  on Ubuntu .

You can download tar.gz or DEB here      click a thumbnail to enlarge

10-goto Tools.	11-click on add program... .	12-goto  File system icon.
13-double-click  usr.	14- double-click  bin.	15-here in usr/bin  Select and Open in "File name" : Gnome-Mplayer.
16-here in Music directory, i select "video.flv" then right-clic to open the fresh added program	17-Gnome-Mplayer accept to read video.	18-Settings- Qt4 parameters.