https://blog.faceutil.com/2017/03/24/eac-exact-audio-copy%eb%a1%9c-%eb%ac%b4%ec%86%90%ec%8b%a4-%ed%86%b5%ec%a7%9c%ed%8c%8c%ec%9d%bc-%eb%a6%ac%ed%95%91%ec%9d%84-%ed%95%b4%eb%b3%b4%ec%9e%90-exact-audio-copy-0-99-prebeta-4-%ec%8a%ac/