How do you change a song to AAC format?

Answer 1

step 1: download a audio encoder or audio converter;
step 2:Select target file format that you want to convert. Highlight your loaded file first and then select output format from "Encoder" drop-down list.
step3:To set the folder that you want to save your target file, you may select the output folder by clicking "Browse" button or directly enter a path in the "Output Folder" box."C:\temp" is set as the default output folder.
Just click "encode"button to start your conversion. You can see "OK" under the "Status" column which means you have convert video audio to mp3 successful.
Here is the detail information,and a aac converter.
http://www.softwaretree.net/article/how-to-convert-aac-files-to-mp3-with-audio-converter.html