To copy discs and sell them is prohibited
according to the Halachah. But as to copying not for sale, in Halachah it is difficult to find a source to
justify copyrighting prohibitions. However, the general rule of behaviour, "Do
not do to others that which you would not like done to yourself," applies in
Copying for yourself, then would probably
be OK, but not for anyone else, family or not.
All of the above refers to the position of
the Halachah alone. The laws of the land, however, prohibit copying discs etc.
under virtually all circumstances.