mp3 help please
 

Merry Christmas every one :-)
I am using the latest version of Limewire Pro and I have converted some MP3s I downloaded and burned them onto a Cd but my Sony Disc Man is not recognising the tracks and will not play them, and yet I am listening to them on my PC right now.
Does anyone have any idea why this is happening as the main reason for getting the files in the 1st place was to listen to them on the go and there is no way I am dragging my Bloody PC around everywhere!!!!! ;-)
Thanks in advance.
Peace
Andrew.