The longer sound files have been labelled with their length in both playing time and disk space required as an aid to the viewer. The choice is all yours. Of course you can always abort the file transfer by clicking on the stop button.
Many of the links in the text have more than one possible destination. The choice is made at the moment the link is activated by a process invisible to the reader. All possibilities have equal weight. So don't forget to exercise the links multiple times. Some of these links will take you off this site, for instance, to a CityLink site. You can choose to go running around the Net from there, but you always have your Back button and your History file to lead you back to these pages. The links that yield a random selection upon activation are: desert, rain, saguaro, drunk, Navajo, sun, Tucson, Phoenix, Flagstaff, Gallup, Albuquerque, Santa Fe, Monument Valley, border towns, Mother Earth [or relevant references to her], mountain, Canyon de Chelly and Georgia O'Keefe.