CDR playback in DVD player

I have an older Sony DVD player that will not play cdr is there any way to change this as i like to listen to my burned cds
You need to burn the CDs with CD-RW blanks and the DVD player can read those. DVD players use a slightly different frequency of laser from a regular CD and they cannot read standard CD-Rs some players do both, but they usually have two lasers.
I agree with fineburg. I own 3 DVD players and they all work with need CD-RW.

Pioneer's DVD players (expensive and cheap) play CD-R and CDRW discs.
Most newer DVD players will play back CDRs as well as MP3s