Lots of people need a tool to help them extract the sound from videos. Either it is about a soundtrack of a movie which they liked or they simply need more disk space, Audio Extractor for FREE could be the right solution for them.
Audio Extractor for FREE isn't that different from any other application of the same kind. It allows you to create as many tasks as you desire and then processes the entire list. Furthermore, it lets you choose between several of the most popular audio formats and adjust the sound quality by customizing the sample rate, volume and bit rate.
The thing which I really didn't like about Audio Extractor for FREE is that it isn't actually capable of batch converting your files. If you have a collection of videos, which you want to convert with the same parameters (using the same settings) you will be forced to add them to task list one by one. Another disadvantage comes from not being able to change the name of the output file.
In conclusion, Audio Extractor for FREE is a tool that will help out casual users, but I don't think you can use it for mass conversion purposes. This tool would never be my first choice, but keeping in my mind that you don't have to pay to be able use it, you could try it out and see for yourself.