Paula: Can you give us any more information on this problem? Does the unit do = this with all RFBD books, or is it a specific one? What version number do you hear when you press A+C on the Book Port? What version of Book Wizard and Book Port Transfer do you have running? I am a little perplexed. Obviously, we tested this, and I just sent a = couple more books without a hitch, so whatever additional information you = can provide will be most useful. >>> pmack1@xxxxxxxxxxxxxx Tuesday, August 24, 2004 5:30:28 AM >>> Hi listers, I am using the new beta software, as well as the firmware for the = Bookport. I am now unable to send the RFB&D books to the BookPort. I'm getting almost all the way through the process and then getting the error: "FFMP3: buffer is read only." Please someone help me figure this out. Usually I have no trouble getting things to work, but I have no idea to what this error refers. Paula