When I unplug my Clip + after saving mp3 files to it, it doesn’t always refresh the media. I have it set to MSC mode, and I always click “safely remove” before unplugging. If I plug it back in, I can use Windows Explorer to see that the new files are in there. The files are all tagged.
Eventually, after plugging and unplugging it a few times it will refresh. I just updated the firmware to version 01.02.18A, but that didn’t help. I don’t use my Clip + on a regular basis, so I don’t know when this problem started.