In audio cd duplication, it is good to know about DPI which stands for dots per inch. It is a gauge of printing resolution and also reveals the number of individual dots of ink a printer or toner can produce within a one-inch space. It would also be good to know about the audio Files as all audio is converted to .CDA format when pressed or burned on to a compact disc. In case you have had your music recorded efficiently, you will get a master which is the original copy of your recording on a disc (or tape), used to create CDs and records.