Hi You need to convert CD's to an MP3 format, the free software CDEX (Google it) will do this for you, when your CDs have been converted simply drag the MP3 files onto your player using Windows Explorer the player will be a removable drive on the left hand window with the drive letter E or F or g,h, etc depending on how many other drives you have.
I have one of these players it plays audio and video very well using the video convertor included on the CD.
Hope this helps
Regards Alan
Alan Clark, December 2007