Looking Towards Using the Google Earth Tour Feature

It would be nice not just to overlay tracks of places you've been on Google Earth, but to lay out a tour as well. This has been possible for some time in Google Earth, but it is non-trivial to set up. The key is the kmz file which can record the places you are visiting and then lead you from one to the other -- with sound annotation if you'd like. I've played with this but haven't gotten it to where it is an easy enhancement. Check out this link for a rudimentary example (which is hopefully still working). [But apparently not! But download and open this link in Google Earth and you'll get some activity. They key is to package everything you need the viewer to see in the kmz file. In this case, the Snow map is bundled in the kmz file.]