Since I'm not planning to use Audible, can I rename the button on my screen? Does anyone know how much memory is devoted to this? Can the software be removed to allow other file types or is that not necessary? Does Garmin have a delete program?


No, there's no modification for those things. And you can't get into the OS.



Can an MP3 be converted for use by the Audible

book manager?


No, but here's a long detailed post by Brian on the Zumo forums on how you can "create" your own from MP3s by setting stops and creating a playlist.