Diggit Drupalextras

Hi
I have installed drupal 7.8 on my webhotel, and after that I have installed MediaElement.js 7.x 1-1 thinking that this would enable me to upload videos onto my drupal site. But when I try to use the Editor (CKEditor SWF 7.x-1.0-beta1) to upload my mov-files, it does not work. OK, I figured out that it is possibly because this edition of the CKEditor only allows swf-files to be uploaded. Choosing configure under MediaElement.js in modules tells me that The MediaElement.js library is not installed. Please download the library from MediaElementjs.com and place it in your libraries folder. But that is just what I have done! :-(
Or is it because it is only the mediaelement.js file that needs to be in the libraries folder?
(I do not have sufficient courage to play around in the folders of my website yet, so I have not tried moving files around in there).
I hope that someone can give me a not too complicated explanation about how I can get my mov-files into my website.
Sincerely
Mette