You probably just need to actually copy your .mp3
files to your .mp3 player.
What I mean by that is, don't try to transfer (or copy or whatever) your .mp3
playlist...
Copy the
actual files to your player... NOT the playlist...
btw, I have renamed your thread here so that people could have some idea what your real problem is !!!
Pays you to always be as clear as possible with the
title of your thread/post !!!