In addition to renting the feature film "Ray" (starring Jamie Foxx), you can also check out the library's recent addition of the definitive biography Ray Charles: Man and Music, by Michael Lydon.
From the back cover:
"Universally hailed as the definitive biography... this commemorative edition includes details of the illness he kept hidden from the world, and the moving tributes that followed his death. It is must reading for any fan of American music and the unique career of one of its greatest artists."