Introduction The basic format of an audio file in a computer is a Wave (.WAV) file. This contains uncompressed PCM audio and a 4-minute song at CD quality will be about 40MB in size. Audio codecs (encoder-decoder) are programs that reduce this filesize and can be split into two main categories - "lossy" and "lossless". See the Hydrogenaudio wiki for more information about these terms and more. Thi