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.