hoser, your computer must have it's security setting set insanely high.
You can do it manually. for youtube, it looks like this.
take your link
http://www.youtube.com/watch?v=W-RX8rlIYQ8 remove the "http://www." and the ".com/watch?v" and then put a [ at the beginning and ] at the end. Thus, your link becomes
[ youtube=W-RX8rlIYQ8 ]
minus those 2 spaces and it becomes:
