To place text over a video loop you setup and run the video loop on layer 1 and then change the song clip background to transparent. If you now run this on layer 2 the text will be displayed on top of the video.

I think what I was trying to say in my last post is that you are probably not going to find the video you want for free. In my experience you will have to look at buying some content. If I was doing this I would probably go out and film some sights around the local area and put some interesting effects over the top. If I had a video library then I would intersperse some of that as well. If it is some stunning nature shots you want then there is plenty around but I have not come across anything myself that is free. Your best bet is to think of a theme and then google "river canyon free video" etc.

Hope that helps!

This is a limitation of XP, you need to be running Vista or above to get this functionality.