should i use a data cdr or a cdr for music use ?
Hu? what? eh?
data cd's, music cds... there all the same! the best thing to do is go for a good quality disk. there all made in the same way, its just the quality and the grade thats different.
they should be fine just copying them (personal use only remember), though you want get better than the original cos lats face it... they look rather cool

read and right speed nice and slow on a direct copy and everything will be fine, gove them a good test before you use them for anything where you have to rely on them.
regards,
Bryan