I researched on the internet for best audio format to rip your audio cd and you don't mind the end result files are huge. Among the two types of audio format in lossless format all audio details are preserved and hence they are huge in size and you mostly notice the beauty of the details when you have a good quality audio system. The other type is lossy audio format, in this some details are lost. Most popular audio format on this type is the mp3. One of the popular lossless format is wav. Generally same song in wav format is many times the size same in mp3 format. I choose to rip my audio cd in wav format because storage is cheap and why loose quality when you have plenty of space. mp3 may be good when you are using some portable player where storage is constrained.