how do you download music files to a mp3 player?

Answer 1

Use the software that came with it. Or if its a USB pen-drive mp3 player:

1. stick it in the computer
2. double click on 'My Computer'
3. One of the icons should be ur pen-drive, im guessing it'll probly be F: or G:
4. Double click on it
5. then open the folder on ur comp containing ur mp3s, then u can jus drag n drop or copy n paste.

Answer 2

1st of all what type of mp3 player do you have?

and what software are you using to download music? because loads mp3 players and different types of software to download music. You need to be more specific .