Miising file

When I plug the clip into pc and open the files of the Sansa clip it shows all the audio files but when the clip is unplugged and I go to the playlist in the audiobook folder one file is missing.I know the file is good as it will play on the pc ,so why is it listed as being in the Sansa by pc but not by the sansa it’s self?
Thanks

Hi @oddfellow11,

Have you opened a Support Case? If not opened, for more information, please contact the SD Technical Support team for best assistance and troubleshooting: