Music CD compiles the music in .cda format which is not readable by windows and if you will browse music cd you would notice that the size of files will be 1kB.
To copy these files you need a application which understand .cda format and ultraiso is one of tham which i like and prefer.
UltraISO is a windows based application which convert music cd/dvd files into mp3 format.
It is fast and simple.
