Just connect it to your computer via a USB cable, then class your player as another hard drive and then transfer your music from where your tracks are stored on the computer into this drive. Hope this is clear enough.
have you saved your cds on your computer? Have youu done so through Media Player? If so, connect your mp3 player to the pc via the cable that came with it. Open media player, click copy music to device, and choose what you want to copy across. Really easy to do once you've done it once.