At Bookshare.org, you can download books scanned by other blind users. There's a rather large selection, and it's constantly expanding. Membership is $75 for the first year, and $50 thereafter.
At The National Library Service for the Blind, you can find many books converted into Web braille, just waiting to be downloaded into your Blazie product. Membership is free, but you must demonstrate a reading disability.
For all of you interested in gothic literature written before 1950, www.litgothic.comhas compiled an excellent collection of gothic and supernatural fiction. Some is in PDF, some is in text or word, but all is accessible.
If you would like to recommend other useful book sites, please feel free to drop me a line at [email protected]