Greetings, I was asked by someone with a PlexTalk, how to convert an music CD to MP3 on a compact flash card and have it work in the Book Port. He used the "backup" function on the PlexTalk, but the Book Port said something about non-filtered files are not accepted. He has Version 2.1 on the Book Port. He does not have a computer, so he cannot check the CF card that way. Any ideas? Thanks, Richard