As Anna says, if the CompactFlash card, itself, is completely full, adding folders will make no difference. The transfer software will not warn you if you try to put too many files into the root directory, though...what happens is that you will receive errors when you try to listen to a file if there are too many in the root directory. The net of this is that while using folders on the Book Port is always advised, you can still only put the amount of material allowed by your CF card onto it and if you try to put more than the card permits, you will receive the errors you mentioned because the software doesn't monitor the amount of material you've marked for transfer. That's your responsibility. _____ From: bookport-bounce@xxxxxxxxxxxxx [mailto:bookport-bounce@xxxxxxxxxxxxx] On Behalf Of John Sent: Thursday, August 02, 2007 1:12 PM To: bookport@xxxxxxxxxxxxx Subject: [bookport] Re: Downloading MP3's Hi I had expected BookPort to stop downloading when it was full. It does not do that. John