I recently purchased a c240 player. I loaded a bunch of music on it. However, after a few days, the player reports that there are no songs on device. I copied them once again and once again they’re gone. None of the songs nor the voice recordings are there.
It is not over time. It will be play just fine, then I turn it off and after a few days of inactivity and turning it back on, it reports with the no files/songs message.