Yeah, if you start off a URL with http:// then the system automagically senses its a link. Otherwise, you could always click to the left of the textbox when posting/replying where it says UltraBoard Codes. That guy is actually a hyperlink, just like HTML Tags (which aren't allowed) and Emoticons Legend.
I couldn't get the videos to play on my Mac; I will try at home on my PC.
THESE ARE GREAT PHOTOS! Theo Pozzy has been around for years and has mucho info on techniques, etc. Thanks, Shawn!