On Mon, 22 Oct 2007, Otto Moerbeek wrote:

quoted text
> On Mon, 22 Oct 2007, Edd Barrett wrote:
>
>> On 22/10/2007, Otto Moerbeek <otto@drijf.net> wrote:
>>> Does your target dir /mnt/usb exist?
>>
>> It does. I copied another album onto an SD mounted there and listened
>> to it on the way to work today.
>
> Show a ls -la of the source dir and a stat(1) of the dir and at least
> one of the problem files.

Hello,
perhaps output of the following will be more useful:
mount |grep /mnt/usb
df /mnt/usb
df -i /mnt/usb
ls -la /mnt/usb
fsck /mnt/usb

The cp program complains about the target files, not the source.

Regards,
David