data files are not recognized

hello, I loaded data files (word, pictures etc.) to my sansa clip. On the computer I did it I was able to see the files, but when I connect the clip to my computer - I don’t see the files, although on the properties the memory storage shows the memory is in use. What can I do? How can I have access to the files?

Files transferred to the Clip in MSC mode are only visible while connected to a computer in MSC mode; likewise for MTP mode.  (On the Clip, it’s under Settings/USB.)  MTP mode has software requirements that MSC mode does not, but DRM files require MTP mode.  As I don’t use DRM files, I find it easiest to set my USB mode to MSC, for greatest use between computers and so all my music can be seen at one time, without changing the USB mode.