If you are one of them who loves to listen audio songs and can’t find it online then you can make use of online streaming sites such as Youtube, Megavideo to find your song, then rip those videos into audio songs online. But for offline audio extracting, you can utilize Aoa Audio Audio extractor which is a freeware to extract background music from video files.
Extracting audio from video can help you in dubbing the video file again and synchronizing it according to your requirements if at all, the video and audio part of avi video files are not balanced. Also you can save hard disk space when extracting only audio from any file. With Aoa Audio converter, it is easy to convert video format into audio and extract output into Mp4, Mp3 and 3GP format (More)
Aoa Audio extractor is free to use and is an handy tool for background music extracting from any flash, swf or avi video file. You can also split mp3 files without downloading any additional mp3 splitter software.