In explorer, you should be able to determine the size of the original documents and this will tell you if the entire thing transfered in one pass, according to the following size limitations: Text files: files larger than 4MB will not transfer in one pass. You can either manually cut the file, or you can, I think, rename the file, and tell the transfer utility to pick up in the middle, presumably near the break point. Audio files: If the resultant MP3 file is larger than 250MB, then it will not transfer in one pass. Otherwise, you're good to go. I'm not sure if RFB&D books are comprised of many MP3 files, or if the resultant stuff that gets sent to the Bookport is done by putting everything into one MP3 file. I hope the former, but I'm not sure. -Brian