1. Try closing LW & then try copying them. BTW For fast & easy access, go to your LW Library window, select Saved Files folder & press the Explore button. Sample image here: Using Library Explore button to access downld folder (click on link) & the folder will open up for you. Then drag & drop them from there to your player.

2. Have you tried playing these songs on your computer 1st to be sure they play ok & have sound? Try it!