download complete - nothing on mp3 player

I have downloaded songs for my daughters mp3 player using the following:

shared file - click on file - click on explore - copy to mp3 player

My mp3 player is connected to the computer under (E):

It shows the songs have been downloaded but there is nothing on the mp3 player.

Have I done something wrong???

Thank you to anyone who can help!

What type of mp3 player are you refering to? Is it a softw one on your comp or a portable mp3 player? For portables, they generally require assistant programs to assist in the transfer. If you're refering to a softw program player, then it depends on which one. Many are just reference players; ie: they use playlists & a playlist is simply a file with a list of the songs which point to the location of the songs. If the songs are later moved then the playlist probably won't work. So in that case you should move the songs to a Music folder for a more permanent location. Then add them to the player. The player will have an add function somewhere.