Here's the file if you want to help and try to get this working:
https://rapidshare.com/#!download|42..._-_800x480.cab
It loads the video selection, goes to play the video and then says "Cannot play this video."
Fortunately I've got a HD2 so I am going to try copying the other youtube files located in the Windows Folder over to my pc then over to my LG Fathom and see if that helps any.