I'm gonna put in err... an old B52 CD here, and this will read the CD and it will go to the CD database and get the err... track titles, because those are not on the CD itself.

先把一张光盘插进去，这是一张老式的B52光盘，电脑会阅读它，并进入它的数据库，再获得跟踪信息，因为这些信息并不在光盘上。