Don't know about the first question but on the Youtube question this works. Here's a typical link from Youtube, this one is on a video clip from "Taxi Driver."
http://www.youtube.com/watch?v=tquSRFKuv4Q
On music and film clips from Youtube, all you need to do is
copy the 11 numbers/letters after the = sign. In this example it's the
tquSRFKuv4Q that you want to copy and stick into the post here.
After you've copied the eleven from Youtube and pasted them here in your post then
in front of the first letter/#, which is the "t" in this example, put [ yt] Just don't leave the one space in it that I had to use for it to show up here on the post. Then
after the last letter/# in the string of eleven...
the Q in this example...
put (without the space) [/ yt] and that's it.