It all depends on what kind of MP3 player and what operating system you are using, but many MP3 players will act as a removable storage device when you plug it in through the USB port. If you're in Windows, plug it in and open up My Computer and see if there is a new removable storage device showing. If it came with a CD, it might have drivers or synching software on it.
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It all depends on what kind of MP3 player and what operating system you are using, but many MP3 players will act as a removable storage device when you plug it in through the USB port. If you're in Windows, plug it in and open up My Computer and see if there is a new removable storage device showing. If it came with a CD, it might have drivers or synching software on it.