Did you burn an Audio CD or a data/mp3 CD? Lots of players won't play mp3 CDs, so try burning an Audio CD & see if that makes a difference
Check the link below for a bit more info.
http://www.gnutellaforums.com/tips-t...rning-cds.html

Which type of CD are you using? Some players don't like CD-RW (re-writable CDs). If you've been using CD-RW, try burning to a CD-R (recordable) disc instead