DoremiSoft AVI to MP3 Converter, this free software is suitable for both novices and veterans. It has a bright UI to operate for beginners. However, it also provides complicated setting parameters for advanced users, including channels, sample rate, MP3 bit rate, and volume. It enables you to add batch AVI Files together, which is convenient compared with peer softwares on the market. The conversion speed is very fast with good quality. You can almost get the converted MP3 files after pressing 'Convert' button..