Cool project! Do you have any pics or videos of the finished project online?
I can't figure out why the URLs aren't being displayed correctly - they show up OK in the editor but not in the post display. You can get to the URL by copying the portion of the link that is underlined, pasting that into a browser admin bar, then copy the rest of the URL that isn't underlined and combine it with the first part.
-- K
Kerry Hammil
Microsoft Research