field not shown when i add content

I think i have the same problem.

I follow the guide here : http://www.mediafront.org/documentation/drupalmediafront-osm-cms-integra...

In the Displaying the player section I did not the step 1 but only the step 2. (Am i supposed to also do step 1 even if I just want to add mediaplayer to a node type ?)

I can't see the field for the video in the content edit/add form, i read that make sure that Media Player is also displayed under Form element to edit the data but i don't understand how to do that ... Can someone help me ?

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more infos :
what i want is a content type for videos (not a view or a bloc). that's flv videos. I want user to fill a path to the file (file is already uploaded with ftp).

My preset :

$preset = array (
  'name' => 'test3',
  'description' => 'test3',
  'player' => 'osmplayer',
  'connect' => array (
    'iscontroller' =>   array (
    ),
    'isplaylist' =>   array (
    ),
  ),
  'settings' => array (
    'showPlaylist' => false,
    'autoNext' => false,
    'showScrollbar' => false,
    'quality' => 'medium',
    'showNodeVoter' => false,
    'showTeaserVoter' => false,
  ),
);

Ok,

If it could help :

I missed that a had to add another cck field (I suggest to add the information in http://www.mediafront.org/documentation/drupalmediafront-osm-cms-integra... ).
And to be complete, I also have to add filefield_sources module to choose the file from server.