Questions on Disk Utility on Creating the cdr Files

hi guys,
new @ forum, please advise me if not correct section should post doubts , questions.

have several audio cds need backup using disk utility cdr files. launched itune , itune shows correct song names , album title. however, when launched disk utility , found out du doesn't recognise cd. shows "audio cd" album title (i not quite sure if correct term being displayed in du, guessed, using traditional chinese main language in mac os x). tried go file->new->image. when select cd source of cdr file, displayed audio file "audio file", instead of exact name shown in itune.

questions here are:
1) why du has such situation doesn't recognise cd, instead of of cds can recognised once itune recognise it?
2) if situation, how can update cd info manually inside du? don't want cdr file came out "audio file" song titles.

useful opinion , suggestion appreciated.

in advance.

 

itunes takes information cd , queries database via internet. information itunes gets not correct.

disk utility deals information on cd. , that's why doesn't show same information itunes.

 

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