AAC, Advanced Audio Coding, is a technique for compressing digital
audio files. Officially part of the MPEG-4 standard, it is most widely
used to create small digital audio files. You might find ringtones in
AAC format in your mobile phone.
Follow the steps below to convert AAC files to MP3.
Converting AAC to MP3 using Eufony AAC MP3 Converter
http://www.softe.net/audio_converter.php
1. After launch Eufony, In the folders pane, click on the folder
contains AAC files you want to convert to MP3.
2. In the file list pane, select one or more AAC files.
3. Right click on the selected AAC files to bring up the context menu
and select Convert.
4. In the Audio Format Conversion window, select MP3 from the Output-
>Format list.
5. If you want to change the output quality, select the Custom radio
button. (optional)
6. If you want to change the destination folder for MP3, click on the
Browse icon button to change. (optional)
7. Click Convert to start converting.