I just copied off the source from one of your pages and created a new page from it. When I did this, I noticed that there were some special characters in it (magic quotes and non UTF-8 line endings). I resaved the file with standard UTF-8 line endings and in ASCII and the video worked correctly. What you will need to do is open your player.inc file and your view_video.tpl file and resave them as UTF-8 in ASCII mode (normal line endings). Then reupload them to your server and give it a try.

Just for the record, you could also make this work without the UTF-8 problem if you remove the underscore (_) from your new file directory.