Haroon, as far as I know, your player will only play cd's not mp3's. If you want to be able to play music from mp3's on your player, you need to convert them from mp3 to CDA format. These are much larger files than mp3's and so not as many will fit onto a cd. You can find converters online to do this for you, but I think Nero has the feature also, just save the files as audio files from Nero.
Fabian, October 2007