i have an mp4 player that shows a full memory without having much on it.?

Question

there is a file called unknown ablum which contains a file called unknown artist, i can not delete this, it says that the directory is not empty, it shows that these files contain nothing.
When songs were being synced to it the back button was hit during sync, my son did this and i am not sure what has happened, it shows a full disc, but nothing on it that i can see

Answer 1

right click on it and chopose properties to see if anything is "hidden" if that does not help, save what is on it to a cd and reformat the entire flash and reinstal what you want on it. Also check bitrate of the songs and a song can take up more or less depending upon how this is set.