Convert (liberate) Audible AAC files to MP3

I was an Audible subscriber for over 2 years, and although I’m no longer active on a plan, I still have 50+ books that I’ve legitimately purchased. Each of them, however, is locked to my Audible username and password. I don’t tolerate DRM where possible, and I’ve done enough system reloads / iPod upgrades to be frustrated at the need to authorize my new devices, and de-authorize my old ones. (and get Audible to reset my devices, since it’s impossible to de-authorize a dead computer!)

This is a companion discussion topic for the original entry at