Better youtube support

I have enhanced the Ourmedia player to better handle youtube.com videos. People often pasted the "wrong" url (e.g., the one for the page, not the one for the video). The media display parser will now accept either page or video url's from youtube in the mediaurl field and display the proper result.

Also, it is no longer necessary to add a preview image for youtube videos as we can now display the default youtube preview image. Here is an example.

See previous post about thumbs. We hope to add automatic thumbnails for youtube, blip and archive videos soon.