via The Library of Congress (6.3.11):
That All May Read . . .
National Library Service for the Blind and Physically Handicapped (NLS)
The Library of Congress' NLS runs a free library program of braille and audio materials circulated to eligible borrowers in the United States by postage-free mail. The library also has a special music collection for people who are blind. Check your eligibility and find the closest library to sign up.