Forest World Builder 1.0.3
World Builder lets you build your own sound and visual worlds to add to Forest.
You can either choose items from folders or drag and drop them on the World Builder window. Add sounds and pictures that create whatever atmosphere you enjoy. Instead of the forest, you might prefer the sounds and sights of a big city like New York or Chicago. Name and describe your world, then you can play it whenever you're in the mood.
For more information, including on updates, please read the documentation or visit the home page.
This program worked for me on both Mac OS 9.0.4 and Mac OS X.