For those of you interested in such things, I have just published my
recordings of Letters From the Earth.  These are unrehearsed live
recordings done in Second Life, three different sessions.  They are
published on 12 individual web pages linked to a title page:

http://bsh.bscottholmes.com/twain/lettersfromtheearth

The audio files are actually hosted on the Podomatic site and the text
used for the reading came from:

http://www.positiveatheism.org/hist/twainlfe.htm