They are around 18 single files. This is what I usually copy to the card. I'm going to copy the files again and if the error persists I will reformat the card. Tat ----- Original Message ----- From: Pamela Rader To: bookport@xxxxxxxxxxxxx Sent: Thursday, November 20, 2008 9:19 AM Subject: [bookport] Re: mp3 file error Hi: There are probably too many files in one folder. That happens with audio files. You'll have to reformat your card and put the files back, making the folder smaller. Pamela From: bookport-bounce@xxxxxxxxxxxxx [mailto:bookport-bounce@xxxxxxxxxxxxx] On Behalf Of Tataindi Sent: Thursday, November 20, 2008 9:14 AM To: bookport@xxxxxxxxxxxxx Subject: [bookport] mp3 file error Hello, I have several mp3 files in the bp and suddenly every time I want to open one of them bp says mp3 file error I copied these files from my pc to the compact card. I always do this in order to save battery and time and this is the first time bp says mp3 file error. I opened the files in my pc and they play normal. Does anyone know what can be the problem? Thanks, Tat