A new audio slideshow with very high production value is live on youtube. It's called "Wild Salmon Universe: People and Tradition on the Nushagak River of Alaska's Bristol Bay." Some of you will recognize the voice of the narrator (and photographer) Clark James Mishler of Anchorage.
Here's the link: Wild Salmon Universe
or, alternatively: http://www.youtube.com/user/natureco.../0/lGupJBPgypQ