One app I found that seems to work on some .lit files is a simple droplet app.
Lit2html.app
Havent tried it on any DRM'd .lits but its worked for me in the past, and is the easiest way I've found on mac, no terminal, no applescript, just drag and drop.
This hint came from
MacOSXHints. The actual hint for reading lit files is
here
good luck,
micro