Figures show it all. XLD is app on Mac OS X that uses CoreAudio to encode AAC. Basically that’s what iTunes was using. My parameter for XLD was: True VBR Encoder quality: Max Target quality: ~111 Resulted bitrate is around 256kbps, sometimes over 300kbps Nero 1.3.3.0 was used for my older encodings And I used… Continue reading AAC Encoding in Snow Leopard or iTunes 9.x Dramatically Improved?