Update on replying issue.
The model is:-Sharp CD-DP2400 mini component system,and it does have right and left RCA Video/Aux input jacks,so there should be no problem with playback via the line-out jack on a computer.I don't know if it will record this input,I will try it.
The reason I wish to do this is:-Many here in the UK,still have stock Radio/Cassette head units in their cars and they are still being fitted ('cos they are cheaper)
Thanks to all who replied.