I understand nothing about how to use it

RE: 1:

You'd have to do:

$swf = new SWFObject('path/to/file.swf');
print $swf->render();

RE: 2:

You might want to look at swftools for CCK-style integration. SWF Embed is just a low-level library.

Re1 is not working!

If the swf file is in your modul directory use this:

  $swf = new SWFObject(base_path() . drupal_get_path('module', 'yourmodulename') .'/file.swf');

The first slash in the file path is necessary!

If the swf file is in your webroot use this:

  $swf = new SWFObject(base_path() .'file.swf');

pp