There are stores where the items that are sold, are "nature"
inclined, ie. T-shirts depicting endangered species, everything
"earthy". Sort of Nature Shops. Most of these shops carry
all types of music and I have seen a few American Indian tapes
from different reservations. Check their music section. They
also have music that includes, rain forests sounds, sea animals
sounds, etc. Good luck, but these tapes are available.
Libby