Dash Media Player loads but does not play - PROBLEM !

Hi, i`m using the Drupal on Windows 7, on XAMPP and i install the Dash Media Player exactly as was stated in a video tutorial on this site. Everything works fine when typed http://localhost/examplesite/player/dashPlayer/swf show player loader then anything, and it was okay as the tutorial. But I added content, and walked to the item, the player appeared in all the time but I tried to read it as the test call from a link http://localhost/examplesite/player/dashPlayer.swf do not play a movie, and a progress bar in the player did not show the film to be loaded. Twice I passed the tutorial step by step and nothing. In my opinion the tutorial is very good but the same configuration is quite difficult and I can not deal with it. Please help and sorry for my poor english. Please help me !